133233013 has 4 divisors (see below), whose sum is σ = 133368448. Its totient is φ = 133097580.

The previous prime is 133233007. The next prime is 133233017. The reversal of 133233013 is 310332331.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133233013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133233017) 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, 66231 + ... + 68212.

It is an arithmetic number, because the mean of its divisors is an integer number (33342112).

Almost surely, 2^133233013 is an apocalyptic number.

It is an amenable number.

133233013 is a deficient number, since it is larger than the sum of its proper divisors (135435).

133233013 is an equidigital number, since it uses as much as digits as its factorization.

133233013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135434.

The product of its (nonzero) digits is 486, while the sum is 19.

The square root of 133233013 is about 11542.6605685171. The cubic root of 133233013 is about 510.7447954183.

Adding to 133233013 its reverse (310332331), we get a palindrome (443565344).

The spelling of 133233013 in words is "one hundred thirty-three million, two hundred thirty-three thousand, thirteen".