133055312 has 20 divisors (see below), whose sum is σ = 277625460. Its totient is φ = 61410048.

The previous prime is 133055269. The next prime is 133055333. The reversal of 133055312 is 213550331.

It can be written as a sum of positive squares in 2 ways, for example, as 38887696 + 94167616 = 6236^2 + 9704^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 319637 + ... + 320052.

It is an arithmetic number, because the mean of its divisors is an integer number (13881273).

Almost surely, 2^133055312 is an apocalyptic number.

It is an amenable number.

133055312 is an abundant number, since it is smaller than the sum of its proper divisors (144570148).

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

133055312 is a wasteful number, since it uses less digits than its factorization.

133055312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 639710 (or 639704 counting only the distinct ones).

The product of its (nonzero) digits is 1350, while the sum is 23.

The square root of 133055312 is about 11534.9604247262. The cubic root of 133055312 is about 510.5176238902.

The spelling of 133055312 in words is "one hundred thirty-three million, fifty-five thousand, three hundred twelve".