12831020291 has 2 divisors, whose sum is σ = 12831020292. Its totient is φ = 12831020290.

The previous prime is 12831020261. The next prime is 12831020297. The reversal of 12831020291 is 19202013821.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12831020291 is a prime.

It is not a weakly prime, because it can be changed into another prime (12831020297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6415510145 + 6415510146.

It is an arithmetic number, because the mean of its divisors is an integer number (6415510146).

Almost surely, 2^12831020291 is an apocalyptic number.

12831020291 is a deficient number, since it is larger than the sum of its proper divisors (1).

12831020291 is an equidigital number, since it uses as much as digits as its factorization.

12831020291 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 29.

The spelling of 12831020291 in words is "twelve billion, eight hundred thirty-one million, twenty thousand, two hundred ninety-one".