1313794217 has 2 divisors, whose sum is σ = 1313794218. Its totient is φ = 1313794216.

The previous prime is 1313794211. The next prime is 1313794231. The reversal of 1313794217 is 7124973131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1175872681 + 137921536 = 34291^2 + 11744^2 .

It is a cyclic number.

It is not a de Polignac number, because 1313794217 - 2²⁸ = 1045358761 is a prime.

It is not a weakly prime, because it can be changed into another prime (1313794211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656897108 + 656897109.

It is an arithmetic number, because the mean of its divisors is an integer number (656897109).

Almost surely, 2^1313794217 is an apocalyptic number.

It is an amenable number.

1313794217 is a deficient number, since it is larger than the sum of its proper divisors (1).

1313794217 is an equidigital number, since it uses as much as digits as its factorization.

1313794217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31752, while the sum is 38.

The square root of 1313794217 is about 36246.2993559343. The cubic root of 1313794217 is about 1095.2395428203.

The spelling of 1313794217 in words is "one billion, three hundred thirteen million, seven hundred ninety-four thousand, two hundred seventeen".