23232443981 has 2 divisors, whose sum is σ = 23232443982. Its totient is φ = 23232443980.

The previous prime is 23232443963. The next prime is 23232444083. The reversal of 23232443981 is 18934423232.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20986157956 + 2246286025 = 144866^2 + 47395^2 .

It is a cyclic number.

It is not a de Polignac number, because 23232443981 - 2²⁶ = 23165335117 is a prime.

It is a super-2 number, since 2×23232443981² (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 (23232443081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11616221990 + 11616221991.

It is an arithmetic number, because the mean of its divisors is an integer number (11616221991).

Almost surely, 2^23232443981 is an apocalyptic number.

It is an amenable number.

23232443981 is a deficient number, since it is larger than the sum of its proper divisors (1).

23232443981 is an equidigital number, since it uses as much as digits as its factorization.

23232443981 is an evil number, because the sum of its binary digits is even.

The product of its digits is 248832, while the sum is 41.

The spelling of 23232443981 in words is "twenty-three billion, two hundred thirty-two million, four hundred forty-three thousand, nine hundred eighty-one".