918931312 has 40 divisors (see below), whose sum is σ = 1919345904. Its totient is φ = 423688704.

The previous prime is 918931303. The next prime is 918931327. The reversal of 918931312 is 213139819.

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 296523 + ... + 299605.

Almost surely, 2^918931312 is an apocalyptic number.

It is an amenable number.

918931312 is an abundant number, since it is smaller than the sum of its proper divisors (1000414592).

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

918931312 is a wasteful number, since it uses less digits than its factorization.

918931312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4537 (or 4531 counting only the distinct ones).

The product of its digits is 11664, while the sum is 37.

The square root of 918931312 is about 30313.8798572535. The cubic root of 918931312 is about 972.2120882744.

The spelling of 918931312 in words is "nine hundred eighteen million, nine hundred thirty-one thousand, three hundred twelve".