1312023031519 has 2 divisors, whose sum is σ = 1312023031520. Its totient is φ = 1312023031518.

The previous prime is 1312023031499. The next prime is 1312023031523. The reversal of 1312023031519 is 9151303202131.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1312023031519 is a prime.

It is a super-2 number, since 2×1312023031519² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1312023031589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656011515759 + 656011515760.

It is an arithmetic number, because the mean of its divisors is an integer number (656011515760).

Almost surely, 2^{1312023031519} is an apocalyptic number.

1312023031519 is a deficient number, since it is larger than the sum of its proper divisors (1).

1312023031519 is an equidigital number, since it uses as much as digits as its factorization.

1312023031519 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4860, while the sum is 31.

The spelling of 1312023031519 in words is "one trillion, three hundred twelve billion, twenty-three million, thirty-one thousand, five hundred nineteen".