166497331 has 24 divisors (see below), whose sum is σ = 225257312. Its totient is φ = 119750400.

The previous prime is 166497329. The next prime is 166497341. The reversal of 166497331 is 133794661.

166497331 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 166497331 - 2¹ = 166497329 is a prime.

It is a super-2 number, since 2×166497331² = 55442722460247122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (166497301) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3451 + ... + 18571.

Almost surely, 2^166497331 is an apocalyptic number.

166497331 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

166497331 is a deficient number, since it is larger than the sum of its proper divisors (58759981).

166497331 is a wasteful number, since it uses less digits than its factorization.

166497331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15163 (or 15152 counting only the distinct ones).

The product of its digits is 81648, while the sum is 40.

The square root of 166497331 is about 12903.3844785002. The cubic root of 166497331 is about 550.1347669752.

The spelling of 166497331 in words is "one hundred sixty-six million, four hundred ninety-seven thousand, three hundred thirty-one".