13331231111971 has 2 divisors, whose sum is σ = 13331231111972. Its totient is φ = 13331231111970.

The previous prime is 13331231111963. The next prime is 13331231112007. The reversal of 13331231111971 is 17911113213331.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13331231111971 - 2³ = 13331231111963 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13331231111971.

It is not a weakly prime, because it can be changed into another prime (13331231111941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6665615555985 + 6665615555986.

It is an arithmetic number, because the mean of its divisors is an integer number (6665615555986).

Almost surely, 2^{13331231111971} is an apocalyptic number.

13331231111971 is a deficient number, since it is larger than the sum of its proper divisors (1).

13331231111971 is an equidigital number, since it uses as much as digits as its factorization.

13331231111971 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10206, while the sum is 37.

The spelling of 13331231111971 in words is "thirteen trillion, three hundred thirty-one billion, two hundred thirty-one million, one hundred eleven thousand, nine hundred seventy-one".