136931943 has 8 divisors (see below), whose sum is σ = 183340800. Its totient is φ = 90905528.

The previous prime is 136931941. The next prime is 136931959. The reversal of 136931943 is 349139631.

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 136931943 - 2¹ = 136931941 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136931941) 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 7 ways as a sum of consecutive naturals, for example, 94773 + ... + 96206.

It is an arithmetic number, because the mean of its divisors is an integer number (22917600).

Almost surely, 2^136931943 is an apocalyptic number.

136931943 is a deficient number, since it is larger than the sum of its proper divisors (46408857).

136931943 is a wasteful number, since it uses less digits than its factorization.

136931943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191221.

The product of its digits is 52488, while the sum is 39.

The square root of 136931943 is about 11701.7922986182. The cubic root of 136931943 is about 515.4282961139.

The spelling of 136931943 in words is "one hundred thirty-six million, nine hundred thirty-one thousand, nine hundred forty-three".