135931028 has 6 divisors (see below), whose sum is σ = 237879306. Its totient is φ = 67965512.

The previous prime is 135931013. The next prime is 135931051. The reversal of 135931028 is 820139531.

It can be written as a sum of positive squares in only one way, i.e., 86341264 + 49589764 = 9292^2 + 7042^2 .

It is a junction number, because it is equal to n+sod(n) for n = 135930985 and 135931003.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16991375 + ... + 16991382.

It is an arithmetic number, because the mean of its divisors is an integer number (39646551).

Almost surely, 2^135931028 is an apocalyptic number.

It is an amenable number.

135931028 is a deficient number, since it is larger than the sum of its proper divisors (101948278).

135931028 is a wasteful number, since it uses less digits than its factorization.

135931028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33982761 (or 33982759 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 135931028 is about 11658.9462645644. The cubic root of 135931028 is about 514.1693689049.

The spelling of 135931028 in words is "one hundred thirty-five million, nine hundred thirty-one thousand, twenty-eight".