30937312 has 24 divisors (see below), whose sum is σ = 69609456. Its totient is φ = 13258752.

The previous prime is 30937307. The next prime is 30937343. The reversal of 30937312 is 21373903.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68833 + ... + 69280.

It is an arithmetic number, because the mean of its divisors is an integer number (2900394).

Almost surely, 2^30937312 is an apocalyptic number.

30937312 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

30937312 is an abundant number, since it is smaller than the sum of its proper divisors (38672144).

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

30937312 is a wasteful number, since it uses less digits than its factorization.

30937312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138130 (or 138122 counting only the distinct ones).

The product of its (nonzero) digits is 3402, while the sum is 28.

The square root of 30937312 is about 5562.1319653529. The cubic root of 30937312 is about 313.9261730229.

The spelling of 30937312 in words is "thirty million, nine hundred thirty-seven thousand, three hundred twelve".