136333391 has 2 divisors, whose sum is σ = 136333392. Its totient is φ = 136333390.

The previous prime is 136333369. The next prime is 136333399. The reversal of 136333391 is 193333631.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 136333391 - 2²² = 132139087 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (136333399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68166695 + 68166696.

It is an arithmetic number, because the mean of its divisors is an integer number (68166696).

Almost surely, 2^136333391 is an apocalyptic number.

136333391 is a deficient number, since it is larger than the sum of its proper divisors (1).

136333391 is an equidigital number, since it uses as much as digits as its factorization.

136333391 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13122, while the sum is 32.

The square root of 136333391 is about 11676.1890615046. The cubic root of 136333391 is about 514.6761919605.

The spelling of 136333391 in words is "one hundred thirty-six million, three hundred thirty-three thousand, three hundred ninety-one".