136906331 has 2 divisors, whose sum is σ = 136906332. Its totient is φ = 136906330.

The previous prime is 136906283. The next prime is 136906333. The reversal of 136906331 is 133609631.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 136906331 - 2²⁶ = 69797467 is a prime.

It is a super-2 number, since 2×136906331² = 37486686935763122, which contains 22 as substring.

Together with 136906333, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (136906333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68453165 + 68453166.

It is an arithmetic number, because the mean of its divisors is an integer number (68453166).

Almost surely, 2^136906331 is an apocalyptic number.

136906331 is a deficient number, since it is larger than the sum of its proper divisors (1).

136906331 is an equidigital number, since it uses as much as digits as its factorization.

136906331 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8748, while the sum is 32.

The square root of 136906331 is about 11700.6978851691. The cubic root of 136906331 is about 515.3961585610.

The spelling of 136906331 in words is "one hundred thirty-six million, nine hundred six thousand, three hundred thirty-one".