135605331 has 6 divisors (see below), whose sum is σ = 195874380. Its totient is φ = 90403548.

The previous prime is 135605329. The next prime is 135605339. The reversal of 135605331 is 133506531.

It is not a de Polignac number, because 135605331 - 2¹ = 135605329 is a prime.

It is a super-2 number, since 2×135605331² = 36777611591239122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 135605295 and 135605304.

It is not an unprimeable number, because it can be changed into a prime (135605339) 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 in 5 ways as a sum of consecutive naturals, for example, 7533621 + ... + 7533638.

It is an arithmetic number, because the mean of its divisors is an integer number (32645730).

Almost surely, 2^135605331 is an apocalyptic number.

135605331 is a deficient number, since it is larger than the sum of its proper divisors (60269049).

135605331 is a wasteful number, since it uses less digits than its factorization.

135605331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15067265 (or 15067262 counting only the distinct ones).

The product of its (nonzero) digits is 4050, while the sum is 27.

The square root of 135605331 is about 11644.9702017652. The cubic root of 135605331 is about 513.7583826575.

The spelling of 135605331 in words is "one hundred thirty-five million, six hundred five thousand, three hundred thirty-one".