30397312 has 32 divisors (see below), whose sum is σ = 66065400. Its totient is φ = 13816320.

The previous prime is 30397303. The next prime is 30397349. The reversal of 30397312 is 21379303.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9387 + ... + 12202.

Almost surely, 2^30397312 is an apocalyptic number.

30397312 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

30397312 is an abundant number, since it is smaller than the sum of its proper divisors (35668088).

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

30397312 is a wasteful number, since it uses less digits than its factorization.

30397312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21614 (or 21602 counting only the distinct ones).

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

The square root of 30397312 is about 5513.3757354274. The cubic root of 30397312 is about 312.0889511881.

Subtracting from 30397312 its reverse (21379303), we obtain a square (9018009 = 3003²).

The spelling of 30397312 in words is "thirty million, three hundred ninety-seven thousand, three hundred twelve".