30431772440 has 32 divisors (see below), whose sum is σ = 69928332480. Its totient is φ = 11913714432.

The previous prime is 30431772419. The next prime is 30431772451. The reversal of 30431772440 is 4427713403.

It is a self number, because there is not a number n which added to its sum of digits gives 30431772440.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8091677 + ... + 8095436.

It is an arithmetic number, because the mean of its divisors is an integer number (2185260390).

Almost surely, 2^30431772440 is an apocalyptic number.

It is an amenable number.

30431772440 is an abundant number, since it is smaller than the sum of its proper divisors (39496560040).

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

30431772440 is a wasteful number, since it uses less digits than its factorization.

30431772440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16187171 (or 16187167 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 35.

The spelling of 30431772440 in words is "thirty billion, four hundred thirty-one million, seven hundred seventy-two thousand, four hundred forty".