1321013230331 has 2 divisors, whose sum is σ = 1321013230332. Its totient is φ = 1321013230330.

The previous prime is 1321013230301. The next prime is 1321013230423. The reversal of 1321013230331 is 1330323101231.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1321013230331 is a prime.

It is a super-2 number, since 2×1321013230331² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1321013230297 and 1321013230306.

It is not a weakly prime, because it can be changed into another prime (1321013230301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660506615165 + 660506615166.

It is an arithmetic number, because the mean of its divisors is an integer number (660506615166).

Almost surely, 2^{1321013230331} is an apocalyptic number.

1321013230331 is a deficient number, since it is larger than the sum of its proper divisors (1).

1321013230331 is an equidigital number, since it uses as much as digits as its factorization.

1321013230331 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 1321013230331 its reverse (1330323101231), we get a palindrome (2651336331562).

The spelling of 1321013230331 in words is "one trillion, three hundred twenty-one billion, thirteen million, two hundred thirty thousand, three hundred thirty-one".