312442544251 has 2 divisors, whose sum is σ = 312442544252. Its totient is φ = 312442544250.

The previous prime is 312442544221. The next prime is 312442544261. The reversal of 312442544251 is 152445244213.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-312442544251 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 312442544251.

It is not a weakly prime, because it can be changed into another prime (312442544201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156221272125 + 156221272126.

It is an arithmetic number, because the mean of its divisors is an integer number (156221272126).

Almost surely, 2^312442544251 is an apocalyptic number.

312442544251 is a deficient number, since it is larger than the sum of its proper divisors (1).

312442544251 is an equidigital number, since it uses as much as digits as its factorization.

312442544251 is an evil number, because the sum of its binary digits is even.

The product of its digits is 153600, while the sum is 37.

Adding to 312442544251 its reverse (152445244213), we get a palindrome (464887788464).

The spelling of 312442544251 in words is "three hundred twelve billion, four hundred forty-two million, five hundred forty-four thousand, two hundred fifty-one".