133397012 has 18 divisors (see below), whose sum is σ = 271558602. Its totient is φ = 57170064.

The previous prime is 133397003. The next prime is 133397023. The reversal of 133397012 is 210793331.

It can be written as a sum of positive squares in only one way, i.e., 73891216 + 59505796 = 8596^2 + 7714^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 340103 + ... + 340494.

It is an arithmetic number, because the mean of its divisors is an integer number (15086589).

Almost surely, 2^133397012 is an apocalyptic number.

It is an amenable number.

133397012 is an abundant number, since it is smaller than the sum of its proper divisors (138161590).

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

133397012 is a wasteful number, since it uses less digits than its factorization.

133397012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 680615 (or 680606 counting only the distinct ones).

The product of its (nonzero) digits is 3402, while the sum is 29.

The square root of 133397012 is about 11549.7624217990. The cubic root of 133397012 is about 510.9542712566.

The spelling of 133397012 in words is "one hundred thirty-three million, three hundred ninety-seven thousand, twelve".