313649940 has 48 divisors (see below), whose sum is σ = 906554880. Its totient is φ = 80941440.

The previous prime is 313649933. The next prime is 313649953. The reversal of 313649940 is 49946313.

It is a congruent number.

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, 82455 + ... + 86174.

It is an arithmetic number, because the mean of its divisors is an integer number (18886560).

Almost surely, 2^313649940 is an apocalyptic number.

313649940 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

313649940 is an abundant number, since it is smaller than the sum of its proper divisors (592904940).

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

313649940 is a wasteful number, since it uses less digits than its factorization.

313649940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168672 (or 168670 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 39.

The square root of 313649940 is about 17710.1648778322. The cubic root of 313649940 is about 679.4357632056.

The spelling of 313649940 in words is "three hundred thirteen million, six hundred forty-nine thousand, nine hundred forty".