1031323013321 has 2 divisors, whose sum is σ = 1031323013322. Its totient is φ = 1031323013320.

The previous prime is 1031323013309. The next prime is 1031323013327. The reversal of 1031323013321 is 1233103231301.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 820720036096 + 210602977225 = 905936^2 + 458915^2 .

It is a cyclic number.

It is not a de Polignac number, because 1031323013321 - 2⁶ = 1031323013257 is a prime.

It is not a weakly prime, because it can be changed into another prime (1031323013327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 515661506660 + 515661506661.

It is an arithmetic number, because the mean of its divisors is an integer number (515661506661).

Almost surely, 2^{1031323013321} is an apocalyptic number.

It is an amenable number.

1031323013321 is a deficient number, since it is larger than the sum of its proper divisors (1).

1031323013321 is an equidigital number, since it uses as much as digits as its factorization.

1031323013321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 972, while the sum is 23.

Adding to 1031323013321 its reverse (1233103231301), we get a palindrome (2264426244622).

The spelling of 1031323013321 in words is "one trillion, thirty-one billion, three hundred twenty-three million, thirteen thousand, three hundred twenty-one".