135304731 has 24 divisors (see below), whose sum is σ = 198362736. Its totient is φ = 88865280.

The previous prime is 135304727. The next prime is 135304733. The reversal of 135304731 is 137403531.

It is not a de Polignac number, because 135304731 - 2² = 135304727 is a prime.

It is a super-2 number, since 2×135304731² = 36614740461964722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 135304695 and 135304704.

It is not an unprimeable number, because it can be changed into a prime (135304733) 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, 236676 + ... + 237246.

It is an arithmetic number, because the mean of its divisors is an integer number (8265114).

Almost surely, 2^135304731 is an apocalyptic number.

135304731 is a deficient number, since it is larger than the sum of its proper divisors (63058005).

135304731 is a wasteful number, since it uses less digits than its factorization.

135304731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 923 (or 920 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 27.

The square root of 135304731 is about 11632.0561810885. The cubic root of 135304731 is about 513.3784811119.

The spelling of 135304731 in words is "one hundred thirty-five million, three hundred four thousand, seven hundred thirty-one".