319531349 has 4 divisors (see below), whose sum is σ = 321204480. Its totient is φ = 317858220.

The previous prime is 319531339. The next prime is 319531357. The reversal of 319531349 is 943135913.

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, and also an emirpimes, since its reverse is a distinct semiprime: 943135913 = 3137 ⋅300649.

It is a cyclic number.

It is not a de Polignac number, because 319531349 - 2²⁸ = 51095893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (319531339) 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, 836279 + ... + 836660.

It is an arithmetic number, because the mean of its divisors is an integer number (80301120).

Almost surely, 2^319531349 is an apocalyptic number.

It is an amenable number.

319531349 is a deficient number, since it is larger than the sum of its proper divisors (1673131).

319531349 is a wasteful number, since it uses less digits than its factorization.

319531349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1673130.

The product of its digits is 43740, while the sum is 38.

The square root of 319531349 is about 17875.4398267567. The cubic root of 319531349 is about 683.6563063902.

The spelling of 319531349 in words is "three hundred nineteen million, five hundred thirty-one thousand, three hundred forty-nine".