18670131 has 12 divisors (see below), whose sum is σ = 28554552. Its totient is φ = 11714496.

The previous prime is 18670123. The next prime is 18670177. The reversal of 18670131 is 13107681.

It is not a de Polignac number, because 18670131 - 2³ = 18670123 is a prime.

It is a super-2 number, since 2×18670131² = 697147583114322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 18670095 and 18670104.

It is not an unprimeable number, because it can be changed into a prime (18670111) 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, 60861 + ... + 61166.

It is an arithmetic number, because the mean of its divisors is an integer number (2379546).

Almost surely, 2^18670131 is an apocalyptic number.

18670131 is a deficient number, since it is larger than the sum of its proper divisors (9884421).

18670131 is a wasteful number, since it uses less digits than its factorization.

18670131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122050 (or 122047 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 27.

The square root of 18670131 is about 4320.8946990178. The cubic root of 18670131 is about 265.2868899643.

The spelling of 18670131 in words is "eighteen million, six hundred seventy thousand, one hundred thirty-one".