20312131020332 has 12 divisors (see below), whose sum is σ = 35546281401120. Its totient is φ = 10156050620016.

The previous prime is 20312131020299. The next prime is 20312131020361. The reversal of 20312131020332 is 23302013121302.

It is a junction number, because it is equal to n+sod(n) for n = 20312131020298 and 20312131020307.

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, 304532 + ... + 6380987.

It is an arithmetic number, because the mean of its divisors is an integer number (2962190116760).

Almost surely, 2^{20312131020332} is an apocalyptic number.

It is an amenable number.

20312131020332 is a deficient number, since it is larger than the sum of its proper divisors (15234150380788).

20312131020332 is a wasteful number, since it uses less digits than its factorization.

20312131020332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7445080 (or 7445078 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 20312131020332 its reverse (23302013121302), we get a palindrome (43614144141634).

The spelling of 20312131020332 in words is "twenty trillion, three hundred twelve billion, one hundred thirty-one million, twenty thousand, three hundred thirty-two".