1317123937 has 2 divisors, whose sum is σ = 1317123938. Its totient is φ = 1317123936.

The previous prime is 1317123917. The next prime is 1317123979. The reversal of 1317123937 is 7393217131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 976500001 + 340623936 = 31249^2 + 18456^2 .

It is a cyclic number.

It is not a de Polignac number, because 1317123937 - 2⁷ = 1317123809 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1317123896 and 1317123905.

It is not a weakly prime, because it can be changed into another prime (1317123917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 658561968 + 658561969.

It is an arithmetic number, because the mean of its divisors is an integer number (658561969).

Almost surely, 2^1317123937 is an apocalyptic number.

It is an amenable number.

1317123937 is a deficient number, since it is larger than the sum of its proper divisors (1).

1317123937 is an equidigital number, since it uses as much as digits as its factorization.

1317123937 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23814, while the sum is 37.

The square root of 1317123937 is about 36292.2021514264. The cubic root of 1317123937 is about 1096.1640317055.

The spelling of 1317123937 in words is "one billion, three hundred seventeen million, one hundred twenty-three thousand, nine hundred thirty-seven".