213003333 has 6 divisors (see below), whose sum is σ = 307671494. Its totient is φ = 142002216.

The previous prime is 213003317. The next prime is 213003341. The reversal of 213003333 is 333300312.

It can be written as a sum of positive squares in only one way, i.e., 145878084 + 67125249 = 12078^2 + 8193^2 .

It is not a de Polignac number, because 213003333 - 2⁴ = 213003317 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213003533) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11833510 + ... + 11833527.

Almost surely, 2^213003333 is an apocalyptic number.

It is an amenable number.

213003333 is a deficient number, since it is larger than the sum of its proper divisors (94668161).

213003333 is a wasteful number, since it uses less digits than its factorization.

213003333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23667043 (or 23667040 counting only the distinct ones).

The product of its (nonzero) digits is 486, while the sum is 18.

The square root of 213003333 is about 14594.6337055782. The cubic root of 213003333 is about 597.2123769875.

Adding to 213003333 its reverse (333300312), we get a palindrome (546303645).

The spelling of 213003333 in words is "two hundred thirteen million, three thousand, three hundred thirty-three".