135579331 has 4 divisors (see below), whose sum is σ = 135608872. Its totient is φ = 135549792.

The previous prime is 135579329. The next prime is 135579347. The reversal of 135579331 is 133975531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 133975531 = 743 ⋅180317.

It is a cyclic number.

It is not a de Polignac number, because 135579331 - 2¹ = 135579329 is a prime.

It is a super-2 number, since 2×135579331² = 36763509988815122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135579371) 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 3 ways as a sum of consecutive naturals, for example, 6246 + ... + 17611.

It is an arithmetic number, because the mean of its divisors is an integer number (33902218).

Almost surely, 2^135579331 is an apocalyptic number.

135579331 is a deficient number, since it is larger than the sum of its proper divisors (29541).

135579331 is an equidigital number, since it uses as much as digits as its factorization.

135579331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29540.

The product of its digits is 42525, while the sum is 37.

The square root of 135579331 is about 11643.8537864403. The cubic root of 135579331 is about 513.7255457682.

The spelling of 135579331 in words is "one hundred thirty-five million, five hundred seventy-nine thousand, three hundred thirty-one".