12312420251 has 16 divisors (see below), whose sum is σ = 12693736800. Its totient is φ = 11937792000.

The previous prime is 12312420247. The next prime is 12312420313. The reversal of 12312420251 is 15202421321.

It is a cyclic number.

It is not a de Polignac number, because 12312420251 - 2² = 12312420247 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12312420851) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1599131 + ... + 1606811.

It is an arithmetic number, because the mean of its divisors is an integer number (793358550).

Almost surely, 2^12312420251 is an apocalyptic number.

12312420251 is a deficient number, since it is larger than the sum of its proper divisors (381316549).

12312420251 is a wasteful number, since it uses less digits than its factorization.

12312420251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8110.

The product of its (nonzero) digits is 960, while the sum is 23.

Adding to 12312420251 its reverse (15202421321), we get a palindrome (27514841572).

The spelling of 12312420251 in words is "twelve billion, three hundred twelve million, four hundred twenty thousand, two hundred fifty-one".