11685000631 has 2 divisors, whose sum is σ = 11685000632. Its totient is φ = 11685000630.

The previous prime is 11685000629. The next prime is 11685000659. The reversal of 11685000631 is 13600058611.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11685000631 - 2¹ = 11685000629 is a prime.

It is a super-2 number, since 2×11685000631² (a number of 21 digits) contains 22 as substring.

Together with 11685000629, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 11685000593 and 11685000602.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11685000331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5842500315 + 5842500316.

It is an arithmetic number, because the mean of its divisors is an integer number (5842500316).

Almost surely, 2^11685000631 is an apocalyptic number.

11685000631 is a deficient number, since it is larger than the sum of its proper divisors (1).

11685000631 is an equidigital number, since it uses as much as digits as its factorization.

11685000631 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4320, while the sum is 31.

The spelling of 11685000631 in words is "eleven billion, six hundred eighty-five million, six hundred thirty-one", and thus it is an aban number.