30319815156 has 12 divisors (see below), whose sum is σ = 70746235392. Its totient is φ = 10106605048.

The previous prime is 30319815151. The next prime is 30319815157. The reversal of 30319815156 is 65151891303.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30319815151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1263325620 + ... + 1263325643.

It is an arithmetic number, because the mean of its divisors is an integer number (5895519616).

Almost surely, 2^30319815156 is an apocalyptic number.

It is an amenable number.

30319815156 is an abundant number, since it is smaller than the sum of its proper divisors (40426420236).

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

30319815156 is a wasteful number, since it uses less digits than its factorization.

30319815156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2526651270 (or 2526651268 counting only the distinct ones).

The product of its (nonzero) digits is 97200, while the sum is 42.

The spelling of 30319815156 in words is "thirty billion, three hundred nineteen million, eight hundred fifteen thousand, one hundred fifty-six".