136338831 has 12 divisors (see below), whose sum is σ = 203725080. Its totient is φ = 87758160.

The previous prime is 136338823. The next prime is 136338857. The reversal of 136338831 is 138833631.

136338831 is a `hidden beast` number, since 13 + 633 + 8 + 8 + 3 + 1 = 666.

It is not a de Polignac number, because 136338831 - 2³ = 136338823 is a prime.

It is a super-2 number, since 2×136338831² = 37176553676893122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136333831) 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, 260925 + ... + 261446.

It is an arithmetic number, because the mean of its divisors is an integer number (16977090).

Almost surely, 2^136338831 is an apocalyptic number.

136338831 is a deficient number, since it is larger than the sum of its proper divisors (67386249).

136338831 is a wasteful number, since it uses less digits than its factorization.

136338831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 522406 (or 522403 counting only the distinct ones).

The product of its digits is 31104, while the sum is 36.

The square root of 136338831 is about 11676.4220119007. The cubic root of 136338831 is about 514.6830374374.

The spelling of 136338831 in words is "one hundred thirty-six million, three hundred thirty-eight thousand, eight hundred thirty-one".