12321531153 has 6 divisors (see below), whose sum is σ = 17797767234. Its totient is φ = 8214354096.

The previous prime is 12321531127. The next prime is 12321531161. The reversal of 12321531153 is 35113512321.

12321531153 is a `hidden beast` number, since 123 + 2 + 1 + 531 + 1 + 5 + 3 = 666.

It can be written as a sum of positive squares in only one way, i.e., 10851805584 + 1469725569 = 104172^2 + 38337^2 .

It is not a de Polignac number, because 12321531153 - 2²² = 12317336849 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12321531163) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 684529500 + ... + 684529517.

It is an arithmetic number, because the mean of its divisors is an integer number (2966294539).

Almost surely, 2^12321531153 is an apocalyptic number.

It is an amenable number.

12321531153 is a deficient number, since it is larger than the sum of its proper divisors (5476236081).

12321531153 is a wasteful number, since it uses less digits than its factorization.

12321531153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1369059023 (or 1369059020 counting only the distinct ones).

The product of its digits is 2700, while the sum is 27.

The spelling of 12321531153 in words is "twelve billion, three hundred twenty-one million, five hundred thirty-one thousand, one hundred fifty-three".