1310323121 has 2 divisors, whose sum is σ = 1310323122. Its totient is φ = 1310323120.

The previous prime is 1310323103. The next prime is 1310323123. The reversal of 1310323121 is 1213230131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1080042496 + 230280625 = 32864^2 + 15175^2 .

It is a cyclic number.

It is not a de Polignac number, because 1310323121 - 2⁶ = 1310323057 is a prime.

Together with 1310323123, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1310323121.

It is not a weakly prime, because it can be changed into another prime (1310323123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 655161560 + 655161561.

It is an arithmetic number, because the mean of its divisors is an integer number (655161561).

Almost surely, 2^1310323121 is an apocalyptic number.

It is an amenable number.

1310323121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1310323121 is an equidigital number, since it uses as much as digits as its factorization.

1310323121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 1310323121 is about 36198.3856131734. The cubic root of 1310323121 is about 1094.2741367890.

Adding to 1310323121 its reverse (1213230131), we get a palindrome (2523553252).

The spelling of 1310323121 in words is "one billion, three hundred ten million, three hundred twenty-three thousand, one hundred twenty-one".