1310323397 has 2 divisors, whose sum is σ = 1310323398. Its totient is φ = 1310323396.

The previous prime is 1310323381. The next prime is 1310323447. The reversal of 1310323397 is 7933230131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1297008196 + 13315201 = 36014^2 + 3649^2 .

It is a cyclic number.

It is not a de Polignac number, because 1310323397 - 2⁴ = 1310323381 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1310323307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 655161698 + 655161699.

It is an arithmetic number, because the mean of its divisors is an integer number (655161699).

Almost surely, 2^1310323397 is an apocalyptic number.

It is an amenable number.

1310323397 is a deficient number, since it is larger than the sum of its proper divisors (1).

1310323397 is an equidigital number, since it uses as much as digits as its factorization.

1310323397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10206, while the sum is 32.

The square root of 1310323397 is about 36198.3894254979. The cubic root of 1310323397 is about 1094.2742136198.

The spelling of 1310323397 in words is "one billion, three hundred ten million, three hundred twenty-three thousand, three hundred ninety-seven".