135819331 has 8 divisors (see below), whose sum is σ = 138945024. Its totient is φ = 132703560.

The previous prime is 135819329. The next prime is 135819349. The reversal of 135819331 is 133918531.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 135819331 - 2¹ = 135819329 is a prime.

It is a super-3 number, since 3×135819331³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135819361) 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, 29986 + ... + 34216.

It is an arithmetic number, because the mean of its divisors is an integer number (17368128).

Almost surely, 2^135819331 is an apocalyptic number.

135819331 is a deficient number, since it is larger than the sum of its proper divisors (3125693).

135819331 is an equidigital number, since it uses as much as digits as its factorization.

135819331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4961.

The product of its digits is 9720, while the sum is 34.

The square root of 135819331 is about 11654.1550959304. The cubic root of 135819331 is about 514.0284962021.

The spelling of 135819331 in words is "one hundred thirty-five million, eight hundred nineteen thousand, three hundred thirty-one".