11217142631 has 2 divisors, whose sum is σ = 11217142632. Its totient is φ = 11217142630.

The previous prime is 11217142627. The next prime is 11217142661. The reversal of 11217142631 is 13624171211.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11217142631 - 2² = 11217142627 is a prime.

It is a super-2 number, since 2×11217142631² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11217142594 and 11217142603.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11217142621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5608571315 + 5608571316.

It is an arithmetic number, because the mean of its divisors is an integer number (5608571316).

Almost surely, 2^11217142631 is an apocalyptic number.

11217142631 is a deficient number, since it is larger than the sum of its proper divisors (1).

11217142631 is an equidigital number, since it uses as much as digits as its factorization.

11217142631 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2016, while the sum is 29.

The spelling of 11217142631 in words is "eleven billion, two hundred seventeen million, one hundred forty-two thousand, six hundred thirty-one".