131818923 has 12 divisors (see below), whose sum is σ = 191668048. Its totient is φ = 87296400.

The previous prime is 131818919. The next prime is 131818931. The reversal of 131818923 is 329818131.

It is not a de Polignac number, because 131818923 - 2² = 131818919 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131818933) 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, 47140 + ... + 49857.

Almost surely, 2^131818923 is an apocalyptic number.

131818923 is a deficient number, since it is larger than the sum of its proper divisors (59849125).

131818923 is a wasteful number, since it uses less digits than its factorization.

131818923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97154 (or 97151 counting only the distinct ones).

The product of its digits is 10368, while the sum is 36.

The square root of 131818923 is about 11481.2422237317. The cubic root of 131818923 is about 508.9314073152.

The spelling of 131818923 in words is "one hundred thirty-one million, eight hundred eighteen thousand, nine hundred twenty-three".