11906631 has 24 divisors (see below), whose sum is σ = 18929664. Its totient is φ = 7151760.

The previous prime is 11906623. The next prime is 11906633. The reversal of 11906631 is 13660911.

It is not a de Polignac number, because 11906631 - 2³ = 11906623 is a prime.

It is a super-2 number, since 2×11906631² = 283535723540322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11906595 and 11906604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11906633) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12100 + ... + 13046.

It is an arithmetic number, because the mean of its divisors is an integer number (788736).

Almost surely, 2^11906631 is an apocalyptic number.

11906631 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11906631 is a deficient number, since it is larger than the sum of its proper divisors (7023033).

11906631 is a wasteful number, since it uses less digits than its factorization.

11906631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1091 (or 1088 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 27.

The square root of 11906631 is about 3450.5986437139. The cubic root of 11906631 is about 228.3475194388.

The spelling of 11906631 in words is "eleven million, nine hundred six thousand, six hundred thirty-one".