319001345 has 16 divisors (see below), whose sum is σ = 436499280. Its totient is φ = 221712384.

The previous prime is 319001339. The next prime is 319001357. The reversal of 319001345 is 543100913.

It can be written as a sum of positive squares in 8 ways, for example, as 1056784 + 317944561 = 1028^2 + 17831^2 .

It is a cyclic number.

It is not a de Polignac number, because 319001345 - 2¹⁶ = 318935809 is a prime.

It is a super-2 number, since 2×319001345² = 203523716223618050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 143240 + ... + 145449.

It is an arithmetic number, because the mean of its divisors is an integer number (27281205).

Almost surely, 2^319001345 is an apocalyptic number.

It is an amenable number.

319001345 is a deficient number, since it is larger than the sum of its proper divisors (117497935).

319001345 is a wasteful number, since it uses less digits than its factorization.

319001345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 288724.

The product of its (nonzero) digits is 1620, while the sum is 26.

The square root of 319001345 is about 17860.6087522234. The cubic root of 319001345 is about 683.2781055240.

The spelling of 319001345 in words is "three hundred nineteen million, one thousand, three hundred forty-five".