213113033 has 4 divisors (see below), whose sum is σ = 243557760. Its totient is φ = 182668308.

The previous prime is 213112981. The next prime is 213113051. The reversal of 213113033 is 330311312.

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 213113033 - 2²⁴ = 196335817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213110033) 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, 15222353 + ... + 15222366.

It is an arithmetic number, because the mean of its divisors is an integer number (60889440).

Almost surely, 2^213113033 is an apocalyptic number.

It is an amenable number.

213113033 is a deficient number, since it is larger than the sum of its proper divisors (30444727).

213113033 is an equidigital number, since it uses as much as digits as its factorization.

213113033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30444726.

The product of its (nonzero) digits is 162, while the sum is 17.

The square root of 213113033 is about 14598.3914524854. The cubic root of 213113033 is about 597.3148839187.

Adding to 213113033 its reverse (330311312), we get a palindrome (543424345).

The spelling of 213113033 in words is "two hundred thirteen million, one hundred thirteen thousand, thirty-three".