320431134 has 16 divisors (see below), whose sum is σ = 641075472. Its totient is φ = 106774848.

The previous prime is 320431093. The next prime is 320431169. The reversal of 320431134 is 431134023.

It is a super-2 number, since 2×320431134² = 205352223273051912, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 320431134.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 16032 + ... + 29964.

It is an arithmetic number, because the mean of its divisors is an integer number (40067217).

Almost surely, 2^320431134 is an apocalyptic number.

320431134 is an abundant number, since it is smaller than the sum of its proper divisors (320644338).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

320431134 is a wasteful number, since it uses less digits than its factorization.

320431134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17771.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 320431134 is about 17900.5903254613. The cubic root of 320431134 is about 684.2974194746.

Adding to 320431134 its reverse (431134023), we get a palindrome (751565157).

The spelling of 320431134 in words is "three hundred twenty million, four hundred thirty-one thousand, one hundred thirty-four".