312323251 has 2 divisors, whose sum is σ = 312323252. Its totient is φ = 312323250.

The previous prime is 312323191. The next prime is 312323287. The reversal of 312323251 is 152323213.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 312323251 - 2²³ = 303934643 is a prime.

It is not a weakly prime, because it can be changed into another prime (312323051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156161625 + 156161626.

It is an arithmetic number, because the mean of its divisors is an integer number (156161626).

Almost surely, 2^312323251 is an apocalyptic number.

312323251 is a deficient number, since it is larger than the sum of its proper divisors (1).

312323251 is an equidigital number, since it uses as much as digits as its factorization.

312323251 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1080, while the sum is 22.

The square root of 312323251 is about 17672.6696059198. The cubic root of 312323251 is about 678.4764411941.

Adding to 312323251 its reverse (152323213), we get a palindrome (464646464).

The spelling of 312323251 in words is "three hundred twelve million, three hundred twenty-three thousand, two hundred fifty-one".