12402431315 has 4 divisors (see below), whose sum is σ = 14882917584. Its totient is φ = 9921945048.

The previous prime is 12402431291. The next prime is 12402431333. The reversal of 12402431315 is 51313420421.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 51313420421 = 16633 ⋅3085037.

It is a cyclic number.

It is not a de Polignac number, because 12402431315 - 2²⁰ = 12401382739 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1240243127 + ... + 1240243136.

It is an arithmetic number, because the mean of its divisors is an integer number (3720729396).

Almost surely, 2^12402431315 is an apocalyptic number.

12402431315 is a deficient number, since it is larger than the sum of its proper divisors (2480486269).

12402431315 is an equidigital number, since it uses as much as digits as its factorization.

12402431315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2480486268.

The product of its (nonzero) digits is 2880, while the sum is 26.

Adding to 12402431315 its reverse (51313420421), we get a palindrome (63715851736).

The spelling of 12402431315 in words is "twelve billion, four hundred two million, four hundred thirty-one thousand, three hundred fifteen".