1312238923 has 2 divisors, whose sum is σ = 1312238924. Its totient is φ = 1312238922.

The previous prime is 1312238909. The next prime is 1312238927. The reversal of 1312238923 is 3298322131.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1312238923 - 2¹⁷ = 1312107851 is a prime.

It is not a weakly prime, because it can be changed into another prime (1312238927) 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, 656119461 + 656119462.

It is an arithmetic number, because the mean of its divisors is an integer number (656119462).

Almost surely, 2^1312238923 is an apocalyptic number.

1312238923 is a deficient number, since it is larger than the sum of its proper divisors (1).

1312238923 is an equidigital number, since it uses as much as digits as its factorization.

1312238923 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15552, while the sum is 34.

The square root of 1312238923 is about 36224.8384813514. The cubic root of 1312238923 is about 1094.8071838583.

The spelling of 1312238923 in words is "one billion, three hundred twelve million, two hundred thirty-eight thousand, nine hundred twenty-three".