312242263 has 2 divisors, whose sum is σ = 312242264. Its totient is φ = 312242262.

The previous prime is 312242237. The next prime is 312242339. The reversal of 312242263 is 362242213.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 312242263 - 2⁹ = 312241751 is a prime.

It is a super-2 number, since 2×312242263² = 194990461606722338, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (312248263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156121131 + 156121132.

It is an arithmetic number, because the mean of its divisors is an integer number (156121132).

Almost surely, 2^312242263 is an apocalyptic number.

312242263 is a deficient number, since it is larger than the sum of its proper divisors (1).

312242263 is an equidigital number, since it uses as much as digits as its factorization.

312242263 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3456, while the sum is 25.

The square root of 312242263 is about 17670.3781227228. The cubic root of 312242263 is about 678.4177912749.

Adding to 312242263 its reverse (362242213), we get a palindrome (674484476).

The spelling of 312242263 in words is "three hundred twelve million, two hundred forty-two thousand, two hundred sixty-three".