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131311032030 = 23251459011467
BaseRepresentation
bin111101001001010111…
…1110101011011011110
3110112221021212120110200
41322102233311123132
54122411111011110
6140153511044330
712326003233113
oct1722257653336
9415837776420
10131311032030
1150763721982
12215479706a6
13c4c86a3029
1464d965c90a
153637ed26c0
hex1e92bf56de

131311032030 has 24 divisors (see below), whose sum is σ = 341408683512. Its totient is φ = 35016275184.

The previous prime is 131311031989. The next prime is 131311032071. The reversal of 131311032030 is 30230113131.

It is a happy number.

131311032030 is a `hidden beast` number, since 1 + 3 + 1 + 311 + 0 + 320 + 30 = 666.

It is an interprime number because it is at equal distance from previous prime (131311031989) and next prime (131311032071).

It is a super-3 number, since 3×1313110320303 (a number of 34 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 131311031994 and 131311032012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 729505644 + ... + 729505823.

It is an arithmetic number, because the mean of its divisors is an integer number (14225361813).

Almost surely, 2131311032030 is an apocalyptic number.

131311032030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131311032030 is an abundant number, since it is smaller than the sum of its proper divisors (210097651482).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131311032030 is a wasteful number, since it uses less digits than its factorization.

131311032030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1459011480 (or 1459011477 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

Adding to 131311032030 its reverse (30230113131), we get a palindrome (161541145161).

The spelling of 131311032030 in words is "one hundred thirty-one billion, three hundred eleven million, thirty-two thousand, thirty".

Divisors: 1 2 3 5 6 9 10 15 18 30 45 90 1459011467 2918022934 4377034401 7295057335 8754068802 13131103203 14590114670 21885172005 26262206406 43770344010 65655516015 131311032030