21932522831 has 2 divisors, whose sum is σ = 21932522832. Its totient is φ = 21932522830.

The previous prime is 21932522803. The next prime is 21932522869. The reversal of 21932522831 is 13822523912.

It is an a-pointer prime, because the next prime (21932522869) can be obtained adding 21932522831 to its sum of digits (38).

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21932522831 is a prime.

It is a super-2 number, since 2×21932522831² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21932522531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10966261415 + 10966261416.

It is an arithmetic number, because the mean of its divisors is an integer number (10966261416).

Almost surely, 2^21932522831 is an apocalyptic number.

21932522831 is a deficient number, since it is larger than the sum of its proper divisors (1).

21932522831 is an equidigital number, since it uses as much as digits as its factorization.

21932522831 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 51840, while the sum is 38.

The spelling of 21932522831 in words is "twenty-one billion, nine hundred thirty-two million, five hundred twenty-two thousand, eight hundred thirty-one".