164517431 has 8 divisors (see below), whose sum is σ = 177402960. Its totient is φ = 151664832.

The previous prime is 164517389. The next prime is 164517469. The reversal of 164517431 is 134715461.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 164517431 - 2²⁶ = 97408567 is a prime.

It is a super-2 number, since 2×164517431² = 54131970205679522, 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 (164517131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2696 + ... + 18338.

It is an arithmetic number, because the mean of its divisors is an integer number (22175370).

Almost surely, 2^164517431 is an apocalyptic number.

164517431 is a deficient number, since it is larger than the sum of its proper divisors (12885529).

164517431 is a wasteful number, since it uses less digits than its factorization.

164517431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16465.

The product of its digits is 10080, while the sum is 32.

The square root of 164517431 is about 12826.4348515088. The cubic root of 164517431 is about 547.9454265277.

The spelling of 164517431 in words is "one hundred sixty-four million, five hundred seventeen thousand, four hundred thirty-one".