135338931 has 120 divisors (see below), whose sum is σ = 263410224. Its totient is φ = 68584320.

The previous prime is 135338899. The next prime is 135338941. The reversal of 135338931 is 139833531.

It is a happy number.

135338931 is a `hidden beast` number, since 13 + 533 + 89 + 31 = 666.

It is not a de Polignac number, because 135338931 - 2⁵ = 135338899 is a prime.

It is a super-2 number, since 2×135338931² = 36633252488445522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135338941) by changing a digit.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 2218641 + ... + 2218701.

Almost surely, 2^135338931 is an apocalyptic number.

135338931 is a deficient number, since it is larger than the sum of its proper divisors (128071293).

135338931 is a wasteful number, since it uses less digits than its factorization.

135338931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143 (or 127 counting only the distinct ones).

The product of its digits is 29160, while the sum is 36.

The square root of 135338931 is about 11633.5261636359. The cubic root of 135338931 is about 513.4217317921.

The spelling of 135338931 in words is "one hundred thirty-five million, three hundred thirty-eight thousand, nine hundred thirty-one".