30999829896372 has 24 divisors (see below), whose sum is σ = 72973050909696. Its totient is φ = 10241831705728.

The previous prime is 30999829896367. The next prime is 30999829896377. The reversal of 30999829896372 is 27369892899903.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (30999829896367) and next prime (30999829896377).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30999829896377) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11430614388 + ... + 11430617099.

It is an arithmetic number, because the mean of its divisors is an integer number (3040543787904).

Almost surely, 2^{30999829896372} is an apocalyptic number.

It is an amenable number.

30999829896372 is an abundant number, since it is smaller than the sum of its proper divisors (41973221013324).

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

30999829896372 is a wasteful number, since it uses less digits than its factorization.

30999829896372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22861231607 (or 22861231605 counting only the distinct ones).

The product of its (nonzero) digits is 5714053632, while the sum is 84.

The spelling of 30999829896372 in words is "thirty trillion, nine hundred ninety-nine billion, eight hundred twenty-nine million, eight hundred ninety-six thousand, three hundred seventy-two".