319368921 has 8 divisors (see below), whose sum is σ = 426045024. Its totient is φ = 212802720.

The previous prime is 319368887. The next prime is 319368943. The reversal of 319368921 is 129863913.

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

It is not a de Polignac number, because 319368921 - 2⁶ = 319368857 is a prime.

It is not an unprimeable number, because it can be changed into a prime (319368971) 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, 20436 + ... + 32501.

It is an arithmetic number, because the mean of its divisors is an integer number (53255628).

Almost surely, 2^319368921 is an apocalyptic number.

It is an amenable number.

319368921 is a deficient number, since it is larger than the sum of its proper divisors (106676103).

319368921 is a wasteful number, since it uses less digits than its factorization.

319368921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54951.

The product of its digits is 69984, while the sum is 42.

The square root of 319368921 is about 17870.8959204624. The cubic root of 319368921 is about 683.5404453038.

The spelling of 319368921 in words is "three hundred nineteen million, three hundred sixty-eight thousand, nine hundred twenty-one".