33230813 has 16 divisors (see below), whose sum is σ = 41679360. Its totient is φ = 25738800.

The previous prime is 33230809. The next prime is 33230843. The reversal of 33230813 is 31803233.

It is a cyclic number.

It is not a de Polignac number, because 33230813 - 2² = 33230809 is a prime.

It is a super-3 number, since 3×33230813³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33230803) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12578 + ... + 14988.

It is an arithmetic number, because the mean of its divisors is an integer number (2604960).

Almost surely, 2^33230813 is an apocalyptic number.

It is an amenable number.

33230813 is a deficient number, since it is larger than the sum of its proper divisors (8448547).

33230813 is a wasteful number, since it uses less digits than its factorization.

33230813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2608.

The product of its (nonzero) digits is 1296, while the sum is 23.

The square root of 33230813 is about 5764.6173333535. The cubic root of 33230813 is about 321.4995150543.

It can be divided in two parts, 33230 and 813, that added together give a palindrome (34043).

The spelling of 33230813 in words is "thirty-three million, two hundred thirty thousand, eight hundred thirteen".