213314331 has 4 divisors (see below), whose sum is σ = 284419112. Its totient is φ = 142209552.

The previous prime is 213314329. The next prime is 213314333. The reversal of 213314331 is 133413312.

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

It is an interprime number because it is at equal distance from previous prime (213314329) and next prime (213314333).

It is not a de Polignac number, because 213314331 - 2¹ = 213314329 is a prime.

It is a super-2 number, since 2×213314331² = 91006007619955122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 213314298 and 213314307.

It is not an unprimeable number, because it can be changed into a prime (213314333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35552386 + ... + 35552391.

It is an arithmetic number, because the mean of its divisors is an integer number (71104778).

Almost surely, 2^213314331 is an apocalyptic number.

213314331 is a deficient number, since it is larger than the sum of its proper divisors (71104781).

213314331 is an equidigital number, since it uses as much as digits as its factorization.

213314331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71104780.

The product of its digits is 648, while the sum is 21.

The square root of 213314331 is about 14605.2843519050. The cubic root of 213314331 is about 597.5028912753.

Adding to 213314331 its reverse (133413312), we get a palindrome (346727643).

The spelling of 213314331 in words is "two hundred thirteen million, three hundred fourteen thousand, three hundred thirty-one".