31214242432 has 32 divisors (see below), whose sum is σ = 62192764980. Its totient is φ = 15605078016.

The previous prime is 31214242393. The next prime is 31214242441. The reversal of 31214242432 is 23424241213.

It can be written as a sum of positive squares in 2 ways, for example, as 28772301376 + 2441941056 = 169624^2 + 49416^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is a self number, because there is not a number n which added to its sum of digits gives 31214242432.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1609948 + ... + 1629220.

Almost surely, 2^31214242432 is an apocalyptic number.

31214242432 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

31214242432 is a deficient number, since it is larger than the sum of its proper divisors (30978522548).

31214242432 is a wasteful number, since it uses less digits than its factorization.

31214242432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31940 (or 31928 counting only the distinct ones).

The product of its digits is 9216, while the sum is 28.

Adding to 31214242432 its reverse (23424241213), we get a palindrome (54638483645).

The spelling of 31214242432 in words is "thirty-one billion, two hundred fourteen million, two hundred forty-two thousand, four hundred thirty-two".