312311123 has 2 divisors, whose sum is σ = 312311124. Its totient is φ = 312311122.

The previous prime is 312311093. The next prime is 312311137. The reversal of 312311123 is 321113213.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 312311123 - 2¹⁰ = 312310099 is a prime.

It is a super-2 number, since 2×312311123² = 195076475099042258, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (312311183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156155561 + 156155562.

It is an arithmetic number, because the mean of its divisors is an integer number (156155562).

Almost surely, 2^312311123 is an apocalyptic number.

312311123 is a deficient number, since it is larger than the sum of its proper divisors (1).

312311123 is an equidigital number, since it uses as much as digits as its factorization.

312311123 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 108, while the sum is 17.

The square root of 312311123 is about 17672.3264738970. The cubic root of 312311123 is about 678.4676589802.

Adding to 312311123 its reverse (321113213), we get a palindrome (633424336).

The spelling of 312311123 in words is "three hundred twelve million, three hundred eleven thousand, one hundred twenty-three".