113531310523 has 4 divisors (see below), whose sum is σ = 113534644968. Its totient is φ = 113527976080.

The previous prime is 113531310521. The next prime is 113531310577. The reversal of 113531310523 is 325013135311.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 325013135311 = 2341 ⋅138835171.

It is a cyclic number.

It is not a de Polignac number, because 113531310523 - 2¹ = 113531310521 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 113531310491 and 113531310500.

It is not an unprimeable number, because it can be changed into a prime (113531310521) 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, 1615618 + ... + 1684423.

It is an arithmetic number, because the mean of its divisors is an integer number (28383661242).

Almost surely, 2^113531310523 is an apocalyptic number.

113531310523 is a deficient number, since it is larger than the sum of its proper divisors (3334445).

113531310523 is an equidigital number, since it uses as much as digits as its factorization.

113531310523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3334444.

The product of its (nonzero) digits is 4050, while the sum is 28.

Adding to 113531310523 its reverse (325013135311), we get a palindrome (438544445834).

The spelling of 113531310523 in words is "one hundred thirteen billion, five hundred thirty-one million, three hundred ten thousand, five hundred twenty-three".