2131386633 has 12 divisors (see below), whose sum is σ = 3150267120. Its totient is φ = 1387879416.

The previous prime is 2131386629. The next prime is 2131386659. The reversal of 2131386633 is 3366831312.

2131386633 is a `hidden beast` number, since 2 + 1 + 3 + 13 + 8 + 6 + 633 = 666.

It is not a de Polignac number, because 2131386633 - 2² = 2131386629 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2131386683) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2753343 + ... + 2754116.

It is an arithmetic number, because the mean of its divisors is an integer number (262522260).

Almost surely, 2^2131386633 is an apocalyptic number.

It is an amenable number.

2131386633 is a deficient number, since it is larger than the sum of its proper divisors (1018880487).

2131386633 is a wasteful number, since it uses less digits than its factorization.

2131386633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5507508 (or 5507505 counting only the distinct ones).

The product of its digits is 46656, while the sum is 36.

The square root of 2131386633 is about 46166.9430761882. The cubic root of 2131386633 is about 1286.9274939547.

The spelling of 2131386633 in words is "two billion, one hundred thirty-one million, three hundred eighty-six thousand, six hundred thirty-three".