135331841 has 4 divisors (see below), whose sum is σ = 135390384. Its totient is φ = 135273300.

The previous prime is 135331837. The next prime is 135331897. The reversal of 135331841 is 148133531.

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 135331841 - 2² = 135331837 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135331811) 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, 25655 + ... + 30476.

It is an arithmetic number, because the mean of its divisors is an integer number (33847596).

It is a Proth number, since it is equal to 2065 ⋅ 2¹⁶ + 1 and 2065 < 2¹⁶.

Almost surely, 2^135331841 is an apocalyptic number.

It is an amenable number.

135331841 is a deficient number, since it is larger than the sum of its proper divisors (58543).

135331841 is an equidigital number, since it uses as much as digits as its factorization.

135331841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58542.

The product of its digits is 4320, while the sum is 29.

The square root of 135331841 is about 11633.2214369022. The cubic root of 135331841 is about 513.4127660948.

The spelling of 135331841 in words is "one hundred thirty-five million, three hundred thirty-one thousand, eight hundred forty-one".