133213372 has 6 divisors (see below), whose sum is σ = 233123408. Its totient is φ = 66606684.

The previous prime is 133213363. The next prime is 133213391. The reversal of 133213372 is 273312331.

It is a super-2 number, since 2×133213372² = 35491604959220768, which contains 22 as substring.

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, 16651668 + ... + 16651675.

Almost surely, 2^133213372 is an apocalyptic number.

It is an amenable number.

133213372 is a deficient number, since it is larger than the sum of its proper divisors (99910036).

133213372 is a wasteful number, since it uses less digits than its factorization.

133213372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33303347 (or 33303345 counting only the distinct ones).

The product of its digits is 2268, while the sum is 25.

The square root of 133213372 is about 11541.8097367787. The cubic root of 133213372 is about 510.7196964550.

The spelling of 133213372 in words is "one hundred thirty-three million, two hundred thirteen thousand, three hundred seventy-two".