20332620631 has 4 divisors (see below), whose sum is σ = 20380917064. Its totient is φ = 20284324200.

The previous prime is 20332620629. The next prime is 20332620661. The reversal of 20332620631 is 13602623302.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20332620631 - 2¹ = 20332620629 is a prime.

It is a super-2 number, since 2×20332620631² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20332620631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20332620611) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24147585 + ... + 24148426.

It is an arithmetic number, because the mean of its divisors is an integer number (5095229266).

Almost surely, 2^20332620631 is an apocalyptic number.

20332620631 is a deficient number, since it is larger than the sum of its proper divisors (48296433).

20332620631 is an equidigital number, since it uses as much as digits as its factorization.

20332620631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48296432.

The product of its (nonzero) digits is 7776, while the sum is 28.

The spelling of 20332620631 in words is "twenty billion, three hundred thirty-two million, six hundred twenty thousand, six hundred thirty-one".