213365827 has 4 divisors (see below), whose sum is σ = 225916776. Its totient is φ = 200814880.

The previous prime is 213365797. The next prime is 213365837. The reversal of 213365827 is 728563312.

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

It is a de Polignac number, because none of the positive numbers 2^k-213365827 is a prime.

It is a super-2 number, since 2×213365827² = 91049952262787858, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213365837) 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, 6275449 + ... + 6275482.

It is an arithmetic number, because the mean of its divisors is an integer number (56479194).

Almost surely, 2^213365827 is an apocalyptic number.

213365827 is a deficient number, since it is larger than the sum of its proper divisors (12550949).

213365827 is a wasteful number, since it uses less digits than its factorization.

213365827 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12550948.

The product of its digits is 60480, while the sum is 37.

The square root of 213365827 is about 14607.0471690893. The cubic root of 213365827 is about 597.5509682658.

The spelling of 213365827 in words is "two hundred thirteen million, three hundred sixty-five thousand, eight hundred twenty-seven".