135859331 has 4 divisors (see below), whose sum is σ = 135907464. Its totient is φ = 135811200.

The previous prime is 135859327. The next prime is 135859337. The reversal of 135859331 is 133958531.

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 135859331 - 2² = 135859327 is a prime.

It is a super-2 number, since 2×135859331² = 36915515639535122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135859337) 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, 19550 + ... + 25571.

It is an arithmetic number, because the mean of its divisors is an integer number (33976866).

Almost surely, 2^135859331 is an apocalyptic number.

135859331 is a deficient number, since it is larger than the sum of its proper divisors (48133).

135859331 is an equidigital number, since it uses as much as digits as its factorization.

135859331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48132.

The product of its digits is 48600, while the sum is 38.

The square root of 135859331 is about 11655.8710957182. The cubic root of 135859331 is about 514.0789532358.

The spelling of 135859331 in words is "one hundred thirty-five million, eight hundred fifty-nine thousand, three hundred thirty-one".