1390752313 has 2 divisors, whose sum is σ = 1390752314. Its totient is φ = 1390752312.

The previous prime is 1390752283. The next prime is 1390752323. The reversal of 1390752313 is 3132570931.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1390693264 + 59049 = 37292^2 + 243^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1390752313 is a prime.

It is a super-2 number, since 2×1390752313² = 3868383992229699938, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1390752323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 695376156 + 695376157.

It is an arithmetic number, because the mean of its divisors is an integer number (695376157).

Almost surely, 2^1390752313 is an apocalyptic number.

It is an amenable number.

1390752313 is a deficient number, since it is larger than the sum of its proper divisors (1).

1390752313 is an equidigital number, since it uses as much as digits as its factorization.

1390752313 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17010, while the sum is 34.

The square root of 1390752313 is about 37292.7917029551. The cubic root of 1390752313 is about 1116.2203354840.

The spelling of 1390752313 in words is "one billion, three hundred ninety million, seven hundred fifty-two thousand, three hundred thirteen".