30881034440 has 32 divisors (see below), whose sum is σ = 69835047480. Its totient is φ = 12289708032.

The previous prime is 30881034439. The next prime is 30881034449. The reversal of 30881034440 is 4443018803.

It can be written as a sum of positive squares in 4 ways, for example, as 30876815524 + 4218916 = 175718^2 + 2054^2 .

It is a super-2 number, since 2×30881034440² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 30881034440.

It is not an unprimeable number, because it can be changed into a prime (30881034449) 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, 1951577 + ... + 1967336.

Almost surely, 2^30881034440 is an apocalyptic number.

It is an amenable number.

30881034440 is an abundant number, since it is smaller than the sum of its proper divisors (38954013040).

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

30881034440 is a wasteful number, since it uses less digits than its factorization.

30881034440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3919121 (or 3919117 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 35.

The spelling of 30881034440 in words is "thirty billion, eight hundred eighty-one million, thirty-four thousand, four hundred forty".