313431885 has 96 divisors (see below), whose sum is σ = 623226240. Its totient is φ = 144446976.

The previous prime is 313431883. The next prime is 313431887. The reversal of 313431885 is 588134313.

It is an interprime number because it is at equal distance from previous prime (313431883) and next prime (313431887).

It is not a de Polignac number, because 313431885 - 2¹ = 313431883 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (313431883) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1811659 + ... + 1811831.

It is an arithmetic number, because the mean of its divisors is an integer number (6491940).

Almost surely, 2^313431885 is an apocalyptic number.

It is an amenable number.

313431885 is a deficient number, since it is larger than the sum of its proper divisors (309794355).

313431885 is a wasteful number, since it uses less digits than its factorization.

313431885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 379 (or 376 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The square root of 313431885 is about 17704.0075971516. The cubic root of 313431885 is about 679.2782747735.

The spelling of 313431885 in words is "three hundred thirteen million, four hundred thirty-one thousand, eight hundred eighty-five".