113031520531 has 8 divisors (see below), whose sum is σ = 117022071600. Its totient is φ = 109047163680.

The previous prime is 113031520529. The next prime is 113031520561. The reversal of 113031520531 is 135025130311.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 113031520531 - 2¹ = 113031520529 is a prime.

It is a super-2 number, since 2×113031520531² (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 = 113031520496 and 113031520505.

It is not an unprimeable number, because it can be changed into a prime (113031520501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1511400 + ... + 1584421.

It is an arithmetic number, because the mean of its divisors is an integer number (14627758950).

Almost surely, 2^113031520531 is an apocalyptic number.

113031520531 is a deficient number, since it is larger than the sum of its proper divisors (3990551069).

113031520531 is a wasteful number, since it uses less digits than its factorization.

113031520531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3097109.

The product of its (nonzero) digits is 1350, while the sum is 25.

Adding to 113031520531 its reverse (135025130311), we get a palindrome (248056650842).

The spelling of 113031520531 in words is "one hundred thirteen billion, thirty-one million, five hundred twenty thousand, five hundred thirty-one".