113161631 has 8 divisors (see below), whose sum is σ = 124837200. Its totient is φ = 101717440.

The previous prime is 113161613. The next prime is 113161667. The reversal of 113161631 is 136161311.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 113161631 - 2²⁶ = 46052767 is a prime.

It is a super-2 number, since 2×113161631² = 25611109461160322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 113161597 and 113161606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113161691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56816 + ... + 58773.

It is an arithmetic number, because the mean of its divisors is an integer number (15604650).

Almost surely, 2^113161631 is an apocalyptic number.

113161631 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

113161631 is a deficient number, since it is larger than the sum of its proper divisors (11675569).

113161631 is a wasteful number, since it uses less digits than its factorization.

113161631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115689.

The product of its digits is 324, while the sum is 23.

The square root of 113161631 is about 10637.7455788339. The cubic root of 113161631 is about 483.6892100676.

The spelling of 113161631 in words is "one hundred thirteen million, one hundred sixty-one thousand, six hundred thirty-one".