113161251 has 32 divisors (see below), whose sum is σ = 178168320. Its totient is φ = 62544384.

The previous prime is 113161183. The next prime is 113161303. The reversal of 113161251 is 152161311.

It is a happy number.

It is not a de Polignac number, because 113161251 - 2⁷ = 113161123 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (113161751) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 101485 + ... + 102593.

It is an arithmetic number, because the mean of its divisors is an integer number (5567760).

Almost surely, 2^113161251 is an apocalyptic number.

113161251 is a deficient number, since it is larger than the sum of its proper divisors (65007069).

113161251 is a wasteful number, since it uses less digits than its factorization.

113161251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1275.

The product of its digits is 180, while the sum is 21.

The square root of 113161251 is about 10637.7277178916. The cubic root of 113161251 is about 483.6886686529.

The spelling of 113161251 in words is "one hundred thirteen million, one hundred sixty-one thousand, two hundred fifty-one".