319341521 has 4 divisors (see below), whose sum is σ = 326768112. Its totient is φ = 311914932.

The previous prime is 319341511. The next prime is 319341553. The reversal of 319341521 is 125143913.

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 319341521 - 2¹⁴ = 319325137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (319341511) 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, 3713231 + ... + 3713316.

It is an arithmetic number, because the mean of its divisors is an integer number (81692028).

Almost surely, 2^319341521 is an apocalyptic number.

It is an amenable number.

319341521 is a deficient number, since it is larger than the sum of its proper divisors (7426591).

319341521 is an equidigital number, since it uses as much as digits as its factorization.

319341521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7426590.

The product of its digits is 3240, while the sum is 29.

The square root of 319341521 is about 17870.1292944399. The cubic root of 319341521 is about 683.5208968102.

The spelling of 319341521 in words is "three hundred nineteen million, three hundred forty-one thousand, five hundred twenty-one".