1312023031493 has 2 divisors, whose sum is σ = 1312023031494. Its totient is φ = 1312023031492.

The previous prime is 1312023031457. The next prime is 1312023031499. The reversal of 1312023031493 is 3941303202131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 808060762084 + 503962269409 = 898922^2 + 709903^2 .

It is a cyclic number.

It is not a de Polignac number, because 1312023031493 - 2¹⁴ = 1312023015109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1312023031499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656011515746 + 656011515747.

It is an arithmetic number, because the mean of its divisors is an integer number (656011515747).

Almost surely, 2^{1312023031493} is an apocalyptic number.

It is an amenable number.

1312023031493 is a deficient number, since it is larger than the sum of its proper divisors (1).

1312023031493 is an equidigital number, since it uses as much as digits as its factorization.

1312023031493 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11664, while the sum is 32.

The spelling of 1312023031493 in words is "one trillion, three hundred twelve billion, twenty-three million, thirty-one thousand, four hundred ninety-three".