135338881 has 4 divisors (see below), whose sum is σ = 142462000. Its totient is φ = 128215764.

The previous prime is 135338849. The next prime is 135338893. The reversal of 135338881 is 188833531.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 135338881 - 2⁵ = 135338849 is a prime.

It is a super-2 number, since 2×135338881² = 36633225420664322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (135338681) 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, 3561531 + ... + 3561568.

It is an arithmetic number, because the mean of its divisors is an integer number (35615500).

Almost surely, 2^135338881 is an apocalyptic number.

It is an amenable number.

135338881 is a deficient number, since it is larger than the sum of its proper divisors (7123119).

135338881 is an equidigital number, since it uses as much as digits as its factorization.

135338881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7123118.

The product of its digits is 69120, while the sum is 40.

The square root of 135338881 is about 11633.5240146741. The cubic root of 135338881 is about 513.4216685654.

The spelling of 135338881 in words is "one hundred thirty-five million, three hundred thirty-eight thousand, eight hundred eighty-one".