31240021004432 has 20 divisors (see below), whose sum is σ = 60865683387120. Its totient is φ = 15532747872288.

The previous prime is 31240021004417. The next prime is 31240021004441. The reversal of 31240021004432 is 23440012004213.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5453911418 + ... + 5453917145.

It is an arithmetic number, because the mean of its divisors is an integer number (3043284169356).

Almost surely, 2^{31240021004432} is an apocalyptic number.

It is an amenable number.

31240021004432 is a deficient number, since it is larger than the sum of its proper divisors (29625662382688).

31240021004432 is a wasteful number, since it uses less digits than its factorization.

31240021004432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10907828750 (or 10907828744 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 31240021004432 its reverse (23440012004213), we get a palindrome (54680033008645).

The spelling of 31240021004432 in words is "thirty-one trillion, two hundred forty billion, twenty-one million, four thousand, four hundred thirty-two".