22812738631 has 4 divisors (see below), whose sum is σ = 22813246872. Its totient is φ = 22812230392.

The previous prime is 22812738629. The next prime is 22812738649. The reversal of 22812738631 is 13683721822.

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 22812738631 - 2¹ = 22812738629 is a prime.

It is a super-2 number, since 2×22812738631² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22812738661) 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, 179485 + ... + 278998.

It is an arithmetic number, because the mean of its divisors is an integer number (5703311718).

Almost surely, 2^22812738631 is an apocalyptic number.

22812738631 is a deficient number, since it is larger than the sum of its proper divisors (508241).

22812738631 is an equidigital number, since it uses as much as digits as its factorization.

22812738631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 508240.

The product of its digits is 193536, while the sum is 43.

The spelling of 22812738631 in words is "twenty-two billion, eight hundred twelve million, seven hundred thirty-eight thousand, six hundred thirty-one".