11171326631 has 2 divisors, whose sum is σ = 11171326632. Its totient is φ = 11171326630.

The previous prime is 11171326627. The next prime is 11171326633. The reversal of 11171326631 is 13662317111.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11171326631 - 2² = 11171326627 is a prime.

It is a super-2 number, since 2×11171326631² (a number of 21 digits) contains 22 as substring.

Together with 11171326633, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11171326633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5585663315 + 5585663316.

It is an arithmetic number, because the mean of its divisors is an integer number (5585663316).

Almost surely, 2^11171326631 is an apocalyptic number.

11171326631 is a deficient number, since it is larger than the sum of its proper divisors (1).

11171326631 is an equidigital number, since it uses as much as digits as its factorization.

11171326631 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4536, while the sum is 32.

The spelling of 11171326631 in words is "eleven billion, one hundred seventy-one million, three hundred twenty-six thousand, six hundred thirty-one".