135319191 has 16 divisors (see below), whose sum is σ = 213312000. Its totient is φ = 74658528.

The previous prime is 135319183. The next prime is 135319193. The reversal of 135319191 is 191913531.

It is not a de Polignac number, because 135319191 - 2³ = 135319183 is a prime.

It is a super-3 number, since 3×135319191³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135319193) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 110491 + ... + 111708.

It is an arithmetic number, because the mean of its divisors is an integer number (13332000).

Almost surely, 2^135319191 is an apocalyptic number.

135319191 is a deficient number, since it is larger than the sum of its proper divisors (77992809).

135319191 is a wasteful number, since it uses less digits than its factorization.

135319191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222238.

The product of its digits is 3645, while the sum is 33.

The square root of 135319191 is about 11632.6777226914. The cubic root of 135319191 is about 513.3967686922.

It can be divided in two parts, 13531 and 9191, that multiplied together give a palindrome (124363421).

The spelling of 135319191 in words is "one hundred thirty-five million, three hundred nineteen thousand, one hundred ninety-one".