113431603131 has 96 divisors (see below), whose sum is σ = 220373457408. Its totient is φ = 54412600320.

The previous prime is 113431603091. The next prime is 113431603133. The reversal of 113431603131 is 131306134311.

113431603131 is a `hidden beast` number, since 1 + 1 + 3 + 43 + 1 + 603 + 13 + 1 = 666.

It is not a de Polignac number, because 113431603131 - 2⁷ = 113431603003 is a prime.

It is a super-2 number, since 2×113431603131² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 113431603095 and 113431603104.

It is not an unprimeable number, because it can be changed into a prime (113431603133) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 533560 + ... + 715226.

It is an arithmetic number, because the mean of its divisors is an integer number (2295556848).

Almost surely, 2^113431603131 is an apocalyptic number.

113431603131 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

113431603131 is a deficient number, since it is larger than the sum of its proper divisors (106941854277).

113431603131 is a wasteful number, since it uses less digits than its factorization.

113431603131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181761 (or 181758 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

Adding to 113431603131 its reverse (131306134311), we get a palindrome (244737737442).

The spelling of 113431603131 in words is "one hundred thirteen billion, four hundred thirty-one million, six hundred three thousand, one hundred thirty-one".