30771295812 has 36 divisors (see below), whose sum is σ = 77822013360. Its totient is φ = 10251953712.

The previous prime is 30771295801. The next prime is 30771295813. The reversal of 30771295812 is 21859217703.

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (30771295813) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 141262 + ... + 285477.

Almost surely, 2^30771295812 is an apocalyptic number.

It is an amenable number.

30771295812 is an abundant number, since it is smaller than the sum of its proper divisors (47050717548).

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

30771295812 is a wasteful number, since it uses less digits than its factorization.

30771295812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 428752 (or 428747 counting only the distinct ones).

The product of its (nonzero) digits is 211680, while the sum is 45.

The spelling of 30771295812 in words is "thirty billion, seven hundred seventy-one million, two hundred ninety-five thousand, eight hundred twelve".