213323222131 has 4 divisors (see below), whose sum is σ = 213391620000. Its totient is φ = 213254824264.

The previous prime is 213323222069. The next prime is 213323222141. The reversal of 213323222131 is 131222323312.

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

It is a cyclic number.

It is not a de Polignac number, because 213323222131 - 2¹¹ = 213323220083 is a prime.

It is a super-2 number, since 2×213323222131² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 213323222096 and 213323222105.

It is not an unprimeable number, because it can be changed into a prime (213323222141) 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, 34194256 + ... + 34200493.

It is an arithmetic number, because the mean of its divisors is an integer number (53347905000).

Almost surely, 2^213323222131 is an apocalyptic number.

213323222131 is a deficient number, since it is larger than the sum of its proper divisors (68397869).

213323222131 is an equidigital number, since it uses as much as digits as its factorization.

213323222131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68397868.

The product of its digits is 2592, while the sum is 25.

Adding to 213323222131 its reverse (131222323312), we get a palindrome (344545545443).

The spelling of 213323222131 in words is "two hundred thirteen billion, three hundred twenty-three million, two hundred twenty-two thousand, one hundred thirty-one".