136984321 has 8 divisors (see below), whose sum is σ = 140795424. Its totient is φ = 133195680.

The previous prime is 136984307. The next prime is 136984349. The reversal of 136984321 is 123489631.

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 136984321 - 2⁹ = 136983809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (136984301) 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, 7146 + ... + 18028.

It is an arithmetic number, because the mean of its divisors is an integer number (17599428).

Almost surely, 2^136984321 is an apocalyptic number.

It is an amenable number.

136984321 is a deficient number, since it is larger than the sum of its proper divisors (3811103).

136984321 is a wasteful number, since it uses less digits than its factorization.

136984321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11231.

The product of its digits is 31104, while the sum is 37.

The square root of 136984321 is about 11704.0301178697. The cubic root of 136984321 is about 515.4940067659.

The spelling of 136984321 in words is "one hundred thirty-six million, nine hundred eighty-four thousand, three hundred twenty-one".