31953430472 has 8 divisors (see below), whose sum is σ = 59912682150. Its totient is φ = 15976715232.

The previous prime is 31953430459. The next prime is 31953430517. The reversal of 31953430472 is 27403435913.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 19169510116 + 12783920356 = 138454^2 + 113066^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1997089397 + ... + 1997089412.

Almost surely, 2^31953430472 is an apocalyptic number.

It is an amenable number.

31953430472 is a deficient number, since it is larger than the sum of its proper divisors (27959251678).

31953430472 is a wasteful number, since it uses less digits than its factorization.

31953430472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3994178815 (or 3994178811 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 41.

The spelling of 31953430472 in words is "thirty-one billion, nine hundred fifty-three million, four hundred thirty thousand, four hundred seventy-two".