167790431 has 4 divisors (see below), whose sum is σ = 168266112. Its totient is φ = 167314752.

The previous prime is 167790379. The next prime is 167790457. The reversal of 167790431 is 134097761.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 167790431 - 2⁶ = 167790367 is a prime.

It is a super-2 number, since 2×167790431² = 56307257470331522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (167790461) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 237311 + ... + 238016.

It is an arithmetic number, because the mean of its divisors is an integer number (42066528).

Almost surely, 2^167790431 is an apocalyptic number.

167790431 is a deficient number, since it is larger than the sum of its proper divisors (475681).

167790431 is an equidigital number, since it uses as much as digits as its factorization.

167790431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 475680.

The product of its (nonzero) digits is 31752, while the sum is 38.

The square root of 167790431 is about 12953.3945743963. The cubic root of 167790431 is about 551.5553013225. Note that the first 3 decimals are identical.

The spelling of 167790431 in words is "one hundred sixty-seven million, seven hundred ninety thousand, four hundred thirty-one".