213323131 has 8 divisors (see below), whose sum is σ = 243998720. Its totient is φ = 182697768.

The previous prime is 213323069. The next prime is 213323141. The reversal of 213323131 is 131323312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 213323131 - 2⁹ = 213322619 is a prime.

It is a super-2 number, since 2×213323131² = 91013516439286322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 213323099 and 213323108.

It is not an unprimeable number, because it can be changed into a prime (213323141) 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 7 ways as a sum of consecutive naturals, for example, 2961 + ... + 20866.

It is an arithmetic number, because the mean of its divisors is an integer number (30499840).

Almost surely, 2^213323131 is an apocalyptic number.

213323131 is a deficient number, since it is larger than the sum of its proper divisors (30675589).

213323131 is a wasteful number, since it uses less digits than its factorization.

213323131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25113.

The product of its digits is 324, while the sum is 19.

The square root of 213323131 is about 14605.5856096221. The cubic root of 213323131 is about 597.5111075589.

Adding to 213323131 its reverse (131323312), we get a palindrome (344646443).

The spelling of 213323131 in words is "two hundred thirteen million, three hundred twenty-three thousand, one hundred thirty-one".