113112431 has 2 divisors, whose sum is σ = 113112432. Its totient is φ = 113112430.

The previous prime is 113112421. The next prime is 113112449. The reversal of 113112431 is 134211311.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 113112431 - 2¹⁴ = 113096047 is a prime.

It is a super-2 number, since 2×113112431² = 25588844093459522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (113112401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56556215 + 56556216.

It is an arithmetic number, because the mean of its divisors is an integer number (56556216).

Almost surely, 2^113112431 is an apocalyptic number.

113112431 is a deficient number, since it is larger than the sum of its proper divisors (1).

113112431 is an equidigital number, since it uses as much as digits as its factorization.

113112431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72, while the sum is 17.

The square root of 113112431 is about 10635.4328073661. The cubic root of 113112431 is about 483.6191010309.

Adding to 113112431 its reverse (134211311), we get a palindrome (247323742).

The spelling of 113112431 in words is "one hundred thirteen million, one hundred twelve thousand, four hundred thirty-one".