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131030041231 = 1131159557887
BaseRepresentation
bin111101000000111111…
…1111100001010001111
3110112012201010202120001
41322001333330022033
54121322142304411
6140105552305131
712316021655005
oct1720177741217
9415181122501
10131030041231
115062a051381
12214898421a7
13c4823cc69b
1464b01d6a75
15361d4cadc1
hex1e81ffc28f

131030041231 has 4 divisors (see below), whose sum is σ = 132189599232. Its totient is φ = 129870483232.

The previous prime is 131030041229. The next prime is 131030041253. The reversal of 131030041231 is 132140030131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 132140030131 = 303013436087.

It is a cyclic number.

It is not a de Polignac number, because 131030041231 - 21 = 131030041229 is a prime.

It is a super-2 number, since 2×1310300412312 (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131030041199 and 131030041208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131030041201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 579778831 + ... + 579779056.

It is an arithmetic number, because the mean of its divisors is an integer number (33047399808).

Almost surely, 2131030041231 is an apocalyptic number.

131030041231 is a deficient number, since it is larger than the sum of its proper divisors (1159558001).

131030041231 is a wasteful number, since it uses less digits than its factorization.

131030041231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1159558000.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 131030041231 its reverse (132140030131), we get a palindrome (263170071362).

It can be divided in two parts, 1310300 and 41231, that added together give a palindrome (1351531).

The spelling of 131030041231 in words is "one hundred thirty-one billion, thirty million, forty-one thousand, two hundred thirty-one".

Divisors: 1 113 1159557887 131030041231