3231313323391 has 2 divisors, whose sum is σ = 3231313323392. Its totient is φ = 3231313323390.

The previous prime is 3231313323347. The next prime is 3231313323431. The reversal of 3231313323391 is 1933233131323.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3231313323391 - 2¹⁹ = 3231312799103 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3231313323391.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3231313324391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1615656661695 + 1615656661696.

It is an arithmetic number, because the mean of its divisors is an integer number (1615656661696).

Almost surely, 2^{3231313323391} is an apocalyptic number.

3231313323391 is a deficient number, since it is larger than the sum of its proper divisors (1).

3231313323391 is an equidigital number, since it uses as much as digits as its factorization.

3231313323391 is an evil number, because the sum of its binary digits is even.

The product of its digits is 78732, while the sum is 37.

The spelling of 3231313323391 in words is "three trillion, two hundred thirty-one billion, three hundred thirteen million, three hundred twenty-three thousand, three hundred ninety-one".