133870233 has 32 divisors (see below), whose sum is σ = 209664000. Its totient is φ = 74399616.

The previous prime is 133870229. The next prime is 133870237. The reversal of 133870233 is 332078331.

It is an interprime number because it is at equal distance from previous prime (133870229) and next prime (133870237).

It is not a de Polignac number, because 133870233 - 2² = 133870229 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 133870233.

It is not an unprimeable number, because it can be changed into a prime (133870237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 127093 + ... + 128141.

It is an arithmetic number, because the mean of its divisors is an integer number (6552000).

Almost surely, 2^133870233 is an apocalyptic number.

It is an amenable number.

133870233 is a deficient number, since it is larger than the sum of its proper divisors (75793767).

133870233 is a wasteful number, since it uses less digits than its factorization.

133870233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1221.

The product of its (nonzero) digits is 9072, while the sum is 30.

The square root of 133870233 is about 11570.2304644290. The cubic root of 133870233 is about 511.5577553751.

The spelling of 133870233 in words is "one hundred thirty-three million, eight hundred seventy thousand, two hundred thirty-three".