30981383532 has 72 divisors (see below), whose sum is σ = 86139707472. Its totient is φ = 9388283520.

The previous prime is 30981383497. The next prime is 30981383581. The reversal of 30981383532 is 23538318903.

30981383532 is a `hidden beast` number, since 3 + 0 + 9 + 81 + 38 + 3 + 532 = 666.

It is a super-2 number, since 2×30981383532² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 275373 + ... + 371204.

It is an arithmetic number, because the mean of its divisors is an integer number (1196384826).

Almost surely, 2^30981383532 is an apocalyptic number.

It is an amenable number.

30981383532 is an abundant number, since it is smaller than the sum of its proper divisors (55158323940).

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

30981383532 is a wasteful number, since it uses less digits than its factorization.

30981383532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 646620 (or 646593 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 45.

The spelling of 30981383532 in words is "thirty billion, nine hundred eighty-one million, three hundred eighty-three thousand, five hundred thirty-two".