1312668337 has 2 divisors, whose sum is σ = 1312668338. Its totient is φ = 1312668336.

The previous prime is 1312668307. The next prime is 1312668349. The reversal of 1312668337 is 7338662131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 971194896 + 341473441 = 31164^2 + 18479^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1312668337 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1312668337.

It is not a weakly prime, because it can be changed into another prime (1312668307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656334168 + 656334169.

It is an arithmetic number, because the mean of its divisors is an integer number (656334169).

Almost surely, 2^1312668337 is an apocalyptic number.

It is an amenable number.

1312668337 is a deficient number, since it is larger than the sum of its proper divisors (1).

1312668337 is an equidigital number, since it uses as much as digits as its factorization.

1312668337 is an evil number, because the sum of its binary digits is even.

The product of its digits is 108864, while the sum is 40.

The square root of 1312668337 is about 36230.7650623058. The cubic root of 1312668337 is about 1094.9265915496.

The spelling of 1312668337 in words is "one billion, three hundred twelve million, six hundred sixty-eight thousand, three hundred thirty-seven".