20032131312 has 30 divisors (see below), whose sum is σ = 56062145672. Its totient is φ = 6677377056.

The previous prime is 20032131299. The next prime is 20032131341. The reversal of 20032131312 is 21313123002.

20032131312 is a `hidden beast` number, since 2 + 0 + 0 + 321 + 31 + 312 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 69555868 + ... + 69556155.

Almost surely, 2^20032131312 is an apocalyptic number.

It is an amenable number.

20032131312 is an abundant number, since it is smaller than the sum of its proper divisors (36030014360).

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

20032131312 is a wasteful number, since it uses less digits than its factorization.

20032131312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139112037 (or 139112028 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 20032131312 its reverse (21313123002), we get a palindrome (41345254314).

The spelling of 20032131312 in words is "twenty billion, thirty-two million, one hundred thirty-one thousand, three hundred twelve".