133213033 has 4 divisors (see below), whose sum is σ = 139004928. Its totient is φ = 127421140.

The previous prime is 133212949. The next prime is 133213043. The reversal of 133213033 is 330312331.

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 not a de Polignac number, because 133213033 - 2¹⁷ = 133081961 is a prime.

It is a super-2 number, since 2×133213033² = 35491424322118178, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 133213033.

It is not an unprimeable number, because it can be changed into a prime (133213043) 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, 2895913 + ... + 2895958.

It is an arithmetic number, because the mean of its divisors is an integer number (34751232).

Almost surely, 2^133213033 is an apocalyptic number.

It is an amenable number.

133213033 is a deficient number, since it is larger than the sum of its proper divisors (5791895).

133213033 is an equidigital number, since it uses as much as digits as its factorization.

133213033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5791894.

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

The square root of 133213033 is about 11541.7950510308. The cubic root of 133213033 is about 510.7192632299.

Adding to 133213033 its reverse (330312331), we get a palindrome (463525364).

It can be divided in two parts, 1332 and 13033, that added together give a triangular number (14365 = T₁₆₉).

The spelling of 133213033 in words is "one hundred thirty-three million, two hundred thirteen thousand, thirty-three".