133197412 has 6 divisors (see below), whose sum is σ = 233095478. Its totient is φ = 66598704.

The previous prime is 133197409. The next prime is 133197419. The reversal of 133197412 is 214791331.

It can be written as a sum of positive squares in only one way, i.e., 87310336 + 45887076 = 9344^2 + 6774^2 .

It is not an unprimeable number, because it can be changed into a prime (133197419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16649673 + ... + 16649680.

Almost surely, 2^133197412 is an apocalyptic number.

It is an amenable number.

133197412 is a deficient number, since it is larger than the sum of its proper divisors (99898066).

133197412 is a wasteful number, since it uses less digits than its factorization.

133197412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33299357 (or 33299355 counting only the distinct ones).

The product of its digits is 4536, while the sum is 31.

The square root of 133197412 is about 11541.1183166970. The cubic root of 133197412 is about 510.6992995740.

The spelling of 133197412 in words is "one hundred thirty-three million, one hundred ninety-seven thousand, four hundred twelve".