323143431 has 16 divisors (see below), whose sum is σ = 488423040. Its totient is φ = 188390880.

The previous prime is 323143423. The next prime is 323143441. The reversal of 323143431 is 134341323.

It is not a de Polignac number, because 323143431 - 2³ = 323143423 is a prime.

It is a super-2 number, since 2×323143431² = 208843353996903522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (323143441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 217305 + ... + 218786.

It is an arithmetic number, because the mean of its divisors is an integer number (30526440).

Almost surely, 2^323143431 is an apocalyptic number.

323143431 is a deficient number, since it is larger than the sum of its proper divisors (165279609).

323143431 is a wasteful number, since it uses less digits than its factorization.

323143431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 436126.

The product of its digits is 2592, while the sum is 24.

The square root of 323143431 is about 17976.1906698833. The cubic root of 323143431 is about 686.2227479465. Note that the first 3 decimals are identical.

Adding to 323143431 its reverse (134341323), we get a palindrome (457484754).

The spelling of 323143431 in words is "three hundred twenty-three million, one hundred forty-three thousand, four hundred thirty-one".