213022233131 has 4 divisors (see below), whose sum is σ = 213024414264. Its totient is φ = 213020052000.

The previous prime is 213022233097. The next prime is 213022233169. The reversal of 213022233131 is 131332220312.

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 213022233131 - 2¹⁰ = 213022232107 is a prime.

It is a super-2 number, since 2×213022233131² (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 = 213022233097 and 213022233106.

It is not an unprimeable number, because it can be changed into a prime (213022233731) 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, 936845 + ... + 1141806.

It is an arithmetic number, because the mean of its divisors is an integer number (53256103566).

Almost surely, 2^213022233131 is an apocalyptic number.

213022233131 is a deficient number, since it is larger than the sum of its proper divisors (2181133).

213022233131 is a wasteful number, since it uses less digits than its factorization.

213022233131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2181132.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 213022233131 its reverse (131332220312), we get a palindrome (344354453443).

The spelling of 213022233131 in words is "two hundred thirteen billion, twenty-two million, two hundred thirty-three thousand, one hundred thirty-one".