133644316 has 12 divisors (see below), whose sum is σ = 251868232. Its totient is φ = 61681968.

The previous prime is 133644307. The next prime is 133644319. The reversal of 133644316 is 613446331.

It is a happy number.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133644319) 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, 1284990 + ... + 1285093.

Almost surely, 2^133644316 is an apocalyptic number.

It is an amenable number.

133644316 is a deficient number, since it is larger than the sum of its proper divisors (118223916).

133644316 is a wasteful number, since it uses less digits than its factorization.

133644316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2570100 (or 2570098 counting only the distinct ones).

The product of its digits is 15552, while the sum is 31.

The square root of 133644316 is about 11560.4634855182. The cubic root of 133644316 is about 511.2698281217.

The spelling of 133644316 in words is "one hundred thirty-three million, six hundred forty-four thousand, three hundred sixteen".