113402140531 has 4 divisors (see below), whose sum is σ = 117312559200. Its totient is φ = 109491721864.

The previous prime is 113402140519. The next prime is 113402140559. The reversal of 113402140531 is 135041204311.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 113402140531 - 2⁷ = 113402140403 is a prime.

It is a super-2 number, since 2×113402140531² (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 = 113402140496 and 113402140505.

It is not an unprimeable number, because it can be changed into a prime (113402140591) 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, 1955209291 + ... + 1955209348.

It is an arithmetic number, because the mean of its divisors is an integer number (29328139800).

Almost surely, 2^113402140531 is an apocalyptic number.

113402140531 is a deficient number, since it is larger than the sum of its proper divisors (3910418669).

113402140531 is an equidigital number, since it uses as much as digits as its factorization.

113402140531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3910418668.

The product of its (nonzero) digits is 1440, while the sum is 25.

Adding to 113402140531 its reverse (135041204311), we get a palindrome (248443344842).

The spelling of 113402140531 in words is "one hundred thirteen billion, four hundred two million, one hundred forty thousand, five hundred thirty-one".