133313732 has 12 divisors (see below), whose sum is σ = 233535120. Its totient is φ = 66589416.

The previous prime is 133313707. The next prime is 133313737. The reversal of 133313732 is 237313331.

It is a happy number.

It is a super-2 number, since 2×133313732² = 35545102279535648, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (133313737) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12278 + ... + 20429.

It is an arithmetic number, because the mean of its divisors is an integer number (19461260).

Almost surely, 2^133313732 is an apocalyptic number.

It is an amenable number.

133313732 is a deficient number, since it is larger than the sum of its proper divisors (100221388).

133313732 is a wasteful number, since it uses less digits than its factorization.

133313732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33730 (or 33728 counting only the distinct ones).

The product of its digits is 3402, while the sum is 26.

The square root of 133313732 is about 11546.1565899653. The cubic root of 133313732 is about 510.8479192245.

The spelling of 133313732 in words is "one hundred thirty-three million, three hundred thirteen thousand, seven hundred thirty-two".