136973023 has 4 divisors (see below), whose sum is σ = 149425128. Its totient is φ = 124520920.

The previous prime is 136973009. The next prime is 136973059. The reversal of 136973023 is 320379631.

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 136973023 - 2¹⁷ = 136841951 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 136973023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136973923) 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 3 ways as a sum of consecutive naturals, for example, 6226036 + ... + 6226057.

It is an arithmetic number, because the mean of its divisors is an integer number (37356282).

Almost surely, 2^136973023 is an apocalyptic number.

136973023 is a deficient number, since it is larger than the sum of its proper divisors (12452105).

136973023 is a wasteful number, since it uses less digits than its factorization.

136973023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12452104.

The product of its (nonzero) digits is 20412, while the sum is 34.

The square root of 136973023 is about 11703.5474536569. The cubic root of 136973023 is about 515.4798343133.

The spelling of 136973023 in words is "one hundred thirty-six million, nine hundred seventy-three thousand, twenty-three".