136693731 has 8 divisors (see below), whose sum is σ = 185697360. Its totient is φ = 89409632.

The previous prime is 136693729. The next prime is 136693759. The reversal of 136693731 is 137396631.

136693731 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 136693731 - 2¹ = 136693729 is a prime.

It is a super-2 number, since 2×136693731² = 37370352189400722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 136693731.

It is not an unprimeable number, because it can be changed into a prime (136693721) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 429696 + ... + 430013.

It is an arithmetic number, because the mean of its divisors is an integer number (23212170).

Almost surely, 2^136693731 is an apocalyptic number.

136693731 is a deficient number, since it is larger than the sum of its proper divisors (49003629).

136693731 is an equidigital number, since it uses as much as digits as its factorization.

136693731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 859765.

The product of its digits is 61236, while the sum is 39.

The square root of 136693731 is about 11691.6094272773. The cubic root of 136693731 is about 515.1292364259.

The spelling of 136693731 in words is "one hundred thirty-six million, six hundred ninety-three thousand, seven hundred thirty-one".