113181131 has 12 divisors (see below), whose sum is σ = 132873840. Its totient is φ = 96117840.

The previous prime is 113181109. The next prime is 113181181. The reversal of 113181131 is 131181311.

It is not a de Polignac number, because 113181131 - 2⁶ = 113181067 is a prime.

It is a super-2 number, since 2×113181131² = 25619936828878322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (113181181) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5255 + ... + 15936.

It is an arithmetic number, because the mean of its divisors is an integer number (11072820).

Almost surely, 2^113181131 is an apocalyptic number.

113181131 is a deficient number, since it is larger than the sum of its proper divisors (19692709).

113181131 is a wasteful number, since it uses less digits than its factorization.

113181131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21314 (or 21307 counting only the distinct ones).

The product of its digits is 72, while the sum is 20.

The square root of 113181131 is about 10638.6620869356. The cubic root of 113181131 is about 483.7169915627.

The spelling of 113181131 in words is "one hundred thirteen million, one hundred eighty-one thousand, one hundred thirty-one".