133777233 has 36 divisors (see below), whose sum is σ = 216152560. Its totient is φ = 79491456.

The previous prime is 133777211. The next prime is 133777283. The reversal of 133777233 is 332777331.

It is a happy number.

It is not a de Polignac number, because 133777233 - 2⁵ = 133777201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133777283) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 48066 + ... + 50772.

Almost surely, 2^133777233 is an apocalyptic number.

It is an amenable number.

133777233 is a deficient number, since it is larger than the sum of its proper divisors (82375327).

133777233 is a wasteful number, since it uses less digits than its factorization.

133777233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2766 (or 2746 counting only the distinct ones).

The product of its digits is 55566, while the sum is 36.

The square root of 133777233 is about 11566.2108315559. The cubic root of 133777233 is about 511.4392677640.

The spelling of 133777233 in words is "one hundred thirty-three million, seven hundred seventy-seven thousand, two hundred thirty-three".