23212478831 has 2 divisors, whose sum is σ = 23212478832. Its totient is φ = 23212478830.

The previous prime is 23212478819. The next prime is 23212478897. The reversal of 23212478831 is 13887421232.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23212478831 is a prime.

It is a super-2 number, since 2×23212478831² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23212478801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11606239415 + 11606239416.

It is an arithmetic number, because the mean of its divisors is an integer number (11606239416).

Almost surely, 2^23212478831 is an apocalyptic number.

23212478831 is a deficient number, since it is larger than the sum of its proper divisors (1).

23212478831 is an equidigital number, since it uses as much as digits as its factorization.

23212478831 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 129024, while the sum is 41.

The spelling of 23212478831 in words is "twenty-three billion, two hundred twelve million, four hundred seventy-eight thousand, eight hundred thirty-one".