213003331 has 4 divisors (see below), whose sum is σ = 214957600. Its totient is φ = 211049064.

The previous prime is 213003317. The next prime is 213003341. The reversal of 213003331 is 133300312.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 213003331 - 2⁹ = 213002819 is a prime.

It is a super-2 number, since 2×213003331² = 90740838034191122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213003311) 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, 976971 + ... + 977188.

It is an arithmetic number, because the mean of its divisors is an integer number (53739400).

Almost surely, 2^213003331 is an apocalyptic number.

213003331 is a deficient number, since it is larger than the sum of its proper divisors (1954269).

213003331 is a wasteful number, since it uses less digits than its factorization.

213003331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1954268.

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

The square root of 213003331 is about 14594.6336370599. The cubic root of 213003331 is about 597.2123751183.

Adding to 213003331 its reverse (133300312), we get a palindrome (346303643).

The spelling of 213003331 in words is "two hundred thirteen million, three thousand, three hundred thirty-one".