133311472 has 30 divisors (see below), whose sum is σ = 295460504. Its totient is φ = 57081120.

The previous prime is 133311461. The next prime is 133311491. The reversal of 133311472 is 274113331.

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, 121647 + ... + 122737.

Almost surely, 2^133311472 is an apocalyptic number.

It is an amenable number.

133311472 is an abundant number, since it is smaller than the sum of its proper divisors (162149032).

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

133311472 is an frugal number, since it uses more digits than its factorization.

133311472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2197 (or 1100 counting only the distinct ones).

The product of its digits is 1512, while the sum is 25.

The square root of 133311472 is about 11546.0587214859. The cubic root of 133311472 is about 510.8450324930.

The spelling of 133311472 in words is "one hundred thirty-three million, three hundred eleven thousand, four hundred seventy-two".