319621442 has 16 divisors (see below), whose sum is σ = 549122112. Its totient is φ = 136680720.

The previous prime is 319621433. The next prime is 319621457. The reversal of 319621442 is 244126913.

It is a junction number, because it is equal to n+sod(n) for n = 319621399 and 319621408.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18308 + ... + 31215.

It is an arithmetic number, because the mean of its divisors is an integer number (34320132).

Almost surely, 2^319621442 is an apocalyptic number.

319621442 is a deficient number, since it is larger than the sum of its proper divisors (229500670).

319621442 is a wasteful number, since it uses less digits than its factorization.

319621442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49993.

The product of its digits is 10368, while the sum is 32.

The square root of 319621442 is about 17877.9596710587. The cubic root of 319621442 is about 683.7205534612.

The spelling of 319621442 in words is "three hundred nineteen million, six hundred twenty-one thousand, four hundred forty-two".