115031613 has 4 divisors (see below), whose sum is σ = 153375488. Its totient is φ = 76687740.

The previous prime is 115031611. The next prime is 115031617. The reversal of 115031613 is 316130511.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 316130511 = 3 ⋅105376837.

It is not a de Polignac number, because 115031613 - 2¹ = 115031611 is a prime.

It is a super-4 number, since 4×115031613⁴ (a number of 33 digits) contains 4444 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 115031613.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115031611) 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, 19171933 + ... + 19171938.

It is an arithmetic number, because the mean of its divisors is an integer number (38343872).

Almost surely, 2^115031613 is an apocalyptic number.

It is an amenable number.

115031613 is a deficient number, since it is larger than the sum of its proper divisors (38343875).

115031613 is an equidigital number, since it uses as much as digits as its factorization.

115031613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38343874.

The product of its (nonzero) digits is 270, while the sum is 21.

The square root of 115031613 is about 10725.2791572061. The cubic root of 115031613 is about 486.3389691002.

The spelling of 115031613 in words is "one hundred fifteen million, thirty-one thousand, six hundred thirteen".