6271371391 has 2 divisors, whose sum is σ = 6271371392. Its totient is φ = 6271371390.

The previous prime is 6271371341. The next prime is 6271371397. The reversal of 6271371391 is 1931731726.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6271371391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6271371397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3135685695 + 3135685696.

It is an arithmetic number, because the mean of its divisors is an integer number (3135685696).

Almost surely, 2^6271371391 is an apocalyptic number.

6271371391 is a deficient number, since it is larger than the sum of its proper divisors (1).

6271371391 is an equidigital number, since it uses as much as digits as its factorization.

6271371391 is an evil number, because the sum of its binary digits is even.

The product of its digits is 47628, while the sum is 40.

The square root of 6271371391 is about 79191.9906998176. The cubic root of 6271371391 is about 1844.1129041836.

The spelling of 6271371391 in words is "six billion, two hundred seventy-one million, three hundred seventy-one thousand, three hundred ninety-one".