136357321 has 8 divisors (see below), whose sum is σ = 140216960. Its totient is φ = 132506928.

The previous prime is 136357307. The next prime is 136357327. The reversal of 136357321 is 123753631.

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 136357321 - 2¹⁵ = 136324553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (136357327) 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, 36670 + ... + 40216.

It is an arithmetic number, because the mean of its divisors is an integer number (17527120).

Almost surely, 2^136357321 is an apocalyptic number.

It is an amenable number.

136357321 is a deficient number, since it is larger than the sum of its proper divisors (3859639).

136357321 is a wasteful number, since it uses less digits than its factorization.

136357321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4623.

The product of its digits is 11340, while the sum is 31.

The square root of 136357321 is about 11677.2137515762. The cubic root of 136357321 is about 514.7063031476.

The spelling of 136357321 in words is "one hundred thirty-six million, three hundred fifty-seven thousand, three hundred twenty-one".