133023013 has 4 divisors (see below), whose sum is σ = 133066368. Its totient is φ = 132979660.

The previous prime is 133023001. The next prime is 133023017. The reversal of 133023013 is 310320331.

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-133023013 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 (133023017) 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, 16693 + ... + 23338.

It is an arithmetic number, because the mean of its divisors is an integer number (33266592).

Almost surely, 2^133023013 is an apocalyptic number.

It is an amenable number.

133023013 is a deficient number, since it is larger than the sum of its proper divisors (43355).

133023013 is an equidigital number, since it uses as much as digits as its factorization.

133023013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43354.

The product of its (nonzero) digits is 162, while the sum is 16.

The square root of 133023013 is about 11533.5602916012. The cubic root of 133023013 is about 510.4763113891.

Adding to 133023013 its reverse (310320331), we get a palindrome (443343344).

The spelling of 133023013 in words is "one hundred thirty-three million, twenty-three thousand, thirteen".