312242440231 has 2 divisors, whose sum is σ = 312242440232. Its totient is φ = 312242440230.

The previous prime is 312242440207. The next prime is 312242440253. The reversal of 312242440231 is 132044242213.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 312242440231 - 2¹⁹ = 312241915943 is a prime.

It is a super-2 number, since 2×312242440231² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 312242440231.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (312242440291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156121220115 + 156121220116.

It is an arithmetic number, because the mean of its divisors is an integer number (156121220116).

Almost surely, 2^312242440231 is an apocalyptic number.

312242440231 is a deficient number, since it is larger than the sum of its proper divisors (1).

312242440231 is an equidigital number, since it uses as much as digits as its factorization.

312242440231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 312242440231 its reverse (132044242213), we get a palindrome (444286682444).

The spelling of 312242440231 in words is "three hundred twelve billion, two hundred forty-two million, four hundred forty thousand, two hundred thirty-one".