213333867 has 24 divisors (see below), whose sum is σ = 326856816. Its totient is φ = 133618176.

The previous prime is 213333863. The next prime is 213333899. The reversal of 213333867 is 768333312.

It is a happy number.

It is not a de Polignac number, because 213333867 - 2² = 213333863 is a prime.

It is a super-2 number, since 2×213333867² = 91022677618347378, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (213333863) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 130308 + ... + 131934.

It is an arithmetic number, because the mean of its divisors is an integer number (13619034).

Almost surely, 2^213333867 is an apocalyptic number.

213333867 is a deficient number, since it is larger than the sum of its proper divisors (113522949).

213333867 is a wasteful number, since it uses less digits than its factorization.

213333867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2507 (or 2504 counting only the distinct ones).

The product of its digits is 54432, while the sum is 36.

The square root of 213333867 is about 14605.9531356225. The cubic root of 213333867 is about 597.5211311189.

It can be divided in two parts, 21333 and 3867, that added together give a triangular number (25200 = T₂₂₄).

The spelling of 213333867 in words is "two hundred thirteen million, three hundred thirty-three thousand, eight hundred sixty-seven".