319861057 has 4 divisors (see below), whose sum is σ = 322379776. Its totient is φ = 317342340.

The previous prime is 319861037. The next prime is 319861063. The reversal of 319861057 is 750168913.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 319861057 - 2⁷ = 319860929 is a prime.

It is a super-2 number, since 2×319861057² = 204622191570314498, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (319861027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1259169 + ... + 1259422.

It is an arithmetic number, because the mean of its divisors is an integer number (80594944).

Almost surely, 2^319861057 is an apocalyptic number.

It is an amenable number.

319861057 is a deficient number, since it is larger than the sum of its proper divisors (2518719).

319861057 is a wasteful number, since it uses less digits than its factorization.

319861057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2518718.

The product of its (nonzero) digits is 45360, while the sum is 40.

The square root of 319861057 is about 17884.6598234353. The cubic root of 319861057 is about 683.8913688444.

The spelling of 319861057 in words is "three hundred nineteen million, eight hundred sixty-one thousand, fifty-seven".