23251871530 has 16 divisors (see below), whose sum is σ = 42158870280. Its totient is φ = 9232859392.

The previous prime is 23251871519. The next prime is 23251871543. The reversal of 23251871530 is 3517815232.

It can be written as a sum of positive squares in 4 ways, for example, as 17161786009 + 6090085521 = 131003^2 + 78039^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 23251871530.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8484715 + ... + 8487454.

Almost surely, 2^23251871530 is an apocalyptic number.

23251871530 is a deficient number, since it is larger than the sum of its proper divisors (18906998750).

23251871530 is a wasteful number, since it uses less digits than its factorization.

23251871530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16972313.

The product of its (nonzero) digits is 50400, while the sum is 37.

The spelling of 23251871530 in words is "twenty-three billion, two hundred fifty-one million, eight hundred seventy-one thousand, five hundred thirty".