213540033 has 8 divisors (see below), whose sum is σ = 325394368. Its totient is φ = 122022864.

The previous prime is 213540029. The next prime is 213540053. The reversal of 213540033 is 330045312.

213540033 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 213540033 - 2² = 213540029 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 10168573 = 213540033 / (2 + 1 + 3 + 5 + 4 + 0 + 0 + 3 + 3).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 213539991 and 213540009.

It is not an unprimeable number, because it can be changed into a prime (213540023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5084266 + ... + 5084307.

It is an arithmetic number, because the mean of its divisors is an integer number (40674296).

Almost surely, 2^213540033 is an apocalyptic number.

It is an amenable number.

213540033 is a deficient number, since it is larger than the sum of its proper divisors (111854335).

213540033 is a wasteful number, since it uses less digits than its factorization.

213540033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10168583.

The product of its (nonzero) digits is 1080, while the sum is 21.

The square root of 213540033 is about 14613.0090330500. The cubic root of 213540033 is about 597.7135507620.

Adding to 213540033 its reverse (330045312), we get a palindrome (543585345).

The spelling of 213540033 in words is "two hundred thirteen million, five hundred forty thousand, thirty-three".