136706755231 has 4 divisors (see below), whose sum is σ = 136783172200. Its totient is φ = 136630338264.

The previous prime is 136706755217. The next prime is 136706755243. The reversal of 136706755231 is 132557607631.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 136706755231 - 2¹⁹ = 136706230943 is a prime.

It is a super-2 number, since 2×136706755231² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136706755631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38205801 + ... + 38209378.

It is an arithmetic number, because the mean of its divisors is an integer number (34195793050).

Almost surely, 2^136706755231 is an apocalyptic number.

136706755231 is a deficient number, since it is larger than the sum of its proper divisors (76416969).

136706755231 is an equidigital number, since it uses as much as digits as its factorization.

136706755231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76416968.

The product of its (nonzero) digits is 793800, while the sum is 46.

The spelling of 136706755231 in words is "one hundred thirty-six billion, seven hundred six million, seven hundred fifty-five thousand, two hundred thirty-one".