23281239530 has 16 divisors (see below), whose sum is σ = 43038832680. Its totient is φ = 9060806592.

The previous prime is 23281239521. The next prime is 23281239533. The reversal of 23281239530 is 3593218232.

It can be written as a sum of positive squares in 4 ways, for example, as 20675851681 + 2605387849 = 143791^2 + 51043^2 .

It is a super-2 number, since 2×23281239530² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (23281239533) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31460765 + ... + 31461504.

Almost surely, 2^23281239530 is an apocalyptic number.

23281239530 is a deficient number, since it is larger than the sum of its proper divisors (19757593150).

23281239530 is a wasteful number, since it uses less digits than its factorization.

23281239530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62922313.

The product of its (nonzero) digits is 77760, while the sum is 38.

The spelling of 23281239530 in words is "twenty-three billion, two hundred eighty-one million, two hundred thirty-nine thousand, five hundred thirty".