135436731 has 24 divisors (see below), whose sum is σ = 193121280. Its totient is φ = 84402864.

The previous prime is 135436727. The next prime is 135436733. The reversal of 135436731 is 137634531.

It is not a de Polignac number, because 135436731 - 2² = 135436727 is a prime.

It is a super-2 number, since 2×135436731² = 36686216207932722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 135436692 and 135436701.

It is not an unprimeable number, because it can be changed into a prime (135436733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 84766 + ... + 86348.

It is an arithmetic number, because the mean of its divisors is an integer number (8046720).

Almost surely, 2^135436731 is an apocalyptic number.

135436731 is a deficient number, since it is larger than the sum of its proper divisors (57684549).

135436731 is a wasteful number, since it uses less digits than its factorization.

135436731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1703 (or 1684 counting only the distinct ones).

The product of its digits is 22680, while the sum is 33.

The square root of 135436731 is about 11637.7287732616. The cubic root of 135436731 is about 513.5453733656.

The spelling of 135436731 in words is "one hundred thirty-five million, four hundred thirty-six thousand, seven hundred thirty-one".