30131431040 has 64 divisors (see below), whose sum is σ = 76270212360. Its totient is φ = 11343593472.

The previous prime is 30131430983. The next prime is 30131431069. The reversal of 30131431040 is 4013413103.

It can be written as a sum of positive squares in 4 ways, for example, as 28842908224 + 1288522816 = 169832^2 + 35896^2 .

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1373837 + ... + 1395596.

Almost surely, 2^30131431040 is an apocalyptic number.

It is an amenable number.

30131431040 is an abundant number, since it is smaller than the sum of its proper divisors (46138781320).

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

30131431040 is a wasteful number, since it uses less digits than its factorization.

30131431040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2769469 (or 2769457 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 30131431040 its reverse (4013413103), we get a palindrome (34144844143).

The spelling of 30131431040 in words is "thirty billion, one hundred thirty-one million, four hundred thirty-one thousand, forty".