23127423981 has 32 divisors (see below), whose sum is σ = 31927062528. Its totient is φ = 14880153600.

The previous prime is 23127423959. The next prime is 23127424003. The reversal of 23127423981 is 18932472132.

It is an interprime number because it is at equal distance from previous prime (23127423959) and next prime (23127424003).

It is a de Polignac number, because none of the positive numbers 2^k-23127423981 is a prime.

It is a super-2 number, since 2×23127423981² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23127423911) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20057901 + ... + 20059053.

It is an arithmetic number, because the mean of its divisors is an integer number (997720704).

Almost surely, 2^23127423981 is an apocalyptic number.

It is an amenable number.

23127423981 is a deficient number, since it is larger than the sum of its proper divisors (8799638547).

23127423981 is a wasteful number, since it uses less digits than its factorization.

23127423981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2501.

The product of its digits is 145152, while the sum is 42.

It can be divided in two parts, 231274 and 23981, that added together give a triangular number (255255 = T₇₁₄).

The spelling of 23127423981 in words is "twenty-three billion, one hundred twenty-seven million, four hundred twenty-three thousand, nine hundred eighty-one".