135331398 has 20 divisors (see below), whose sum is σ = 303242940. Its totient is φ = 45110412.

The previous prime is 135331387. The next prime is 135331403. The reversal of 135331398 is 893133531.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 417528 + ... + 417851.

It is an arithmetic number, because the mean of its divisors is an integer number (15162147).

Almost surely, 2^135331398 is an apocalyptic number.

135331398 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

135331398 is an abundant number, since it is smaller than the sum of its proper divisors (167911542).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

135331398 is an equidigital number, since it uses as much as digits as its factorization.

135331398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 835393 (or 835384 counting only the distinct ones).

The product of its digits is 29160, while the sum is 36.

The square root of 135331398 is about 11633.2023965888. The cubic root of 135331398 is about 513.4122058864.

The spelling of 135331398 in words is "one hundred thirty-five million, three hundred thirty-one thousand, three hundred ninety-eight".