113139031 has 2 divisors, whose sum is σ = 113139032. Its totient is φ = 113139030.

The previous prime is 113138999. The next prime is 113139073. The reversal of 113139031 is 130931311.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 113139031 - 2⁵ = 113138999 is a prime.

It is a super-2 number, since 2×113139031² = 25600880671237922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 113138993 and 113139011.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (113139331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56569515 + 56569516.

It is an arithmetic number, because the mean of its divisors is an integer number (56569516).

Almost surely, 2^113139031 is an apocalyptic number.

113139031 is a deficient number, since it is larger than the sum of its proper divisors (1).

113139031 is an equidigital number, since it uses as much as digits as its factorization.

113139031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 243, while the sum is 22.

The square root of 113139031 is about 10636.6832706441. The cubic root of 113139031 is about 483.6570080340.

The spelling of 113139031 in words is "one hundred thirteen million, one hundred thirty-nine thousand, thirty-one".