113123031 has 16 divisors (see below), whose sum is σ = 176047104. Its totient is φ = 63265824.

The previous prime is 113122991. The next prime is 113123033. The reversal of 113123031 is 130321311.

It is not a de Polignac number, because 113123031 - 2⁶ = 113122967 is a prime.

It is a super-2 number, since 2×113123031² = 25593640285253922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 113123031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113123033) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56320 + ... + 58293.

It is an arithmetic number, because the mean of its divisors is an integer number (11002944).

Almost surely, 2^113123031 is an apocalyptic number.

113123031 is a deficient number, since it is larger than the sum of its proper divisors (62924073).

113123031 is a wasteful number, since it uses less digits than its factorization.

113123031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114670.

The product of its (nonzero) digits is 54, while the sum is 15.

The square root of 113123031 is about 10635.9311299011. The cubic root of 113123031 is about 483.6342075413.

Adding to 113123031 its reverse (130321311), we get a palindrome (243444342).

The spelling of 113123031 in words is "one hundred thirteen million, one hundred twenty-three thousand, thirty-one".