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131301030431 = 1929721333037
BaseRepresentation
bin111101001001000100…
…1101011101000011111
3110112220121001102212002
41322102021223220133
54122401030433211
6140152512432515
712325522225664
oct1722211535037
9415817042762
10131301030431
115075901059a
122154454873b
13c4c65b081c
1464d81b7a6b
1536371a903b
hex1e9226ba1f

131301030431 has 16 divisors (see below), whose sum is σ = 143001679200. Its totient is φ = 120080838528.

The previous prime is 131301030409. The next prime is 131301030439. The reversal of 131301030431 is 134030103131.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-131301030431 is a prime.

It is a super-2 number, since 2×1313010304312 (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131301030439) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3957845 + ... + 3990881.

It is an arithmetic number, because the mean of its divisors is an integer number (8937604950).

Almost surely, 2131301030431 is an apocalyptic number.

131301030431 is a deficient number, since it is larger than the sum of its proper divisors (11700648769).

131301030431 is a wasteful number, since it uses less digits than its factorization.

131301030431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40298.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 131301030431 its reverse (134030103131), we get a palindrome (265331133562).

The spelling of 131301030431 in words is "one hundred thirty-one billion, three hundred one million, thirty thousand, four hundred thirty-one".

Divisors: 1 19 29 551 7213 33037 137047 209177 627703 958073 3974363 18203387 238295881 4527621739 6910580549 131301030431