136331963 has 4 divisors (see below), whose sum is σ = 136363800. Its totient is φ = 136300128.

The previous prime is 136331957. The next prime is 136331981. The reversal of 136331963 is 369133631.

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 136331963 - 2⁴ = 136331947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (136331263) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8270 + ... + 18467.

It is an arithmetic number, because the mean of its divisors is an integer number (34090950).

Almost surely, 2^136331963 is an apocalyptic number.

136331963 is a deficient number, since it is larger than the sum of its proper divisors (31837).

136331963 is an equidigital number, since it uses as much as digits as its factorization.

136331963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31836.

The product of its digits is 26244, while the sum is 35.

The square root of 136331963 is about 11676.1279112555. The cubic root of 136331963 is about 514.6743949926.

The spelling of 136331963 in words is "one hundred thirty-six million, three hundred thirty-one thousand, nine hundred sixty-three".