431664323 has 8 divisors (see below), whose sum is σ = 457626528. Its totient is φ = 405765504.

The previous prime is 431664319. The next prime is 431664349. The reversal of 431664323 is 323466134.

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 431664323 - 2² = 431664319 is a prime.

It is a super-3 number, since 3×431664323³ (a number of 27 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 431664323.

It is not an unprimeable number, because it can be changed into a prime (431660323) 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, 1436 + ... + 29417.

It is an arithmetic number, because the mean of its divisors is an integer number (57203316).

Almost surely, 2^431664323 is an apocalyptic number.

431664323 is a deficient number, since it is larger than the sum of its proper divisors (25962205).

431664323 is a wasteful number, since it uses less digits than its factorization.

431664323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31693.

The product of its digits is 31104, while the sum is 32.

The square root of 431664323 is about 20776.5329879651. The cubic root of 431664323 is about 755.7567798870.

The spelling of 431664323 in words is "four hundred thirty-one million, six hundred sixty-four thousand, three hundred twenty-three".