319121312 has 24 divisors (see below), whose sum is σ = 629034336. Its totient is φ = 159366592.

The previous prime is 319121287. The next prime is 319121323. The reversal of 319121312 is 213121913.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22763 + ... + 34005.

It is an arithmetic number, because the mean of its divisors is an integer number (26209764).

Almost surely, 2^319121312 is an apocalyptic number.

319121312 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

319121312 is a deficient number, since it is larger than the sum of its proper divisors (309913024).

319121312 is a wasteful number, since it uses less digits than its factorization.

319121312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12140 (or 12132 counting only the distinct ones).

The product of its digits is 324, while the sum is 23.

The square root of 319121312 is about 17863.9668606947. The cubic root of 319121312 is about 683.3637483719.

The spelling of 319121312 in words is "three hundred nineteen million, one hundred twenty-one thousand, three hundred twelve".