10131918 has 32 divisors (see below), whose sum is σ = 20946816. Its totient is φ = 3265248.

The previous prime is 10131871. The next prime is 10131923. The reversal of 10131918 is 81913101.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44521 + ... + 44747.

It is an arithmetic number, because the mean of its divisors is an integer number (654588).

Almost surely, 2^10131918 is an apocalyptic number.

10131918 is an abundant number, since it is smaller than the sum of its proper divisors (10814898).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

10131918 is a wasteful number, since it uses less digits than its factorization.

10131918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 448.

The product of its (nonzero) digits is 216, while the sum is 24.

The square root of 10131918 is about 3183.0673885421. The cubic root of 10131918 is about 216.3866958473.

The spelling of 10131918 in words is "ten million, one hundred thirty-one thousand, nine hundred eighteen".