113520031 has 2 divisors, whose sum is σ = 113520032. Its totient is φ = 113520030.

The previous prime is 113519977. The next prime is 113520097. The reversal of 113520031 is 130025311.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 113520031 - 2¹¹ = 113517983 is a prime.

It is a super-2 number, since 2×113520031² = 25773594876481922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 113519987 and 113520014.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (113520931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56760015 + 56760016.

It is an arithmetic number, because the mean of its divisors is an integer number (56760016).

Almost surely, 2^113520031 is an apocalyptic number.

113520031 is a deficient number, since it is larger than the sum of its proper divisors (1).

113520031 is an equidigital number, since it uses as much as digits as its factorization.

113520031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 90, while the sum is 16.

The square root of 113520031 is about 10654.5779362676. The cubic root of 113520031 is about 484.1993108844.

Adding to 113520031 its reverse (130025311), we get a palindrome (243545342).

The spelling of 113520031 in words is "one hundred thirteen million, five hundred twenty thousand, thirty-one".