319440690 has 24 divisors (see below), whose sum is σ = 830546028. Its totient is φ = 85184160.

The previous prime is 319440683. The next prime is 319440701. The reversal of 319440690 is 96044913.

It can be written as a sum of positive squares in 2 ways, for example, as 306845289 + 12595401 = 17517^2 + 3549^2 .

It is a super-2 number, since 2×319440690² = 204084708855352200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1774581 + ... + 1774760.

Almost surely, 2^319440690 is an apocalyptic number.

319440690 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

319440690 is an abundant number, since it is smaller than the sum of its proper divisors (511105338).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

319440690 is a wasteful number, since it uses less digits than its factorization.

319440690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3549354 (or 3549351 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 319440690 is about 17872.9037931725. The cubic root of 319440690 is about 683.5916435020.

The spelling of 319440690 in words is "three hundred nineteen million, four hundred forty thousand, six hundred ninety".