213131222030 has 16 divisors (see below), whose sum is σ = 388492355520. Its totient is φ = 84173343072.

The previous prime is 213131222027. The next prime is 213131222039. The reversal of 213131222030 is 30222131312.

It is a junction number, because it is equal to n+sod(n) for n = 213131221993 and 213131222011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213131222039) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 134892389 + ... + 134893968.

It is an arithmetic number, because the mean of its divisors is an integer number (24280772220).

Almost surely, 2^213131222030 is an apocalyptic number.

213131222030 is a deficient number, since it is larger than the sum of its proper divisors (175361133490).

213131222030 is a wasteful number, since it uses less digits than its factorization.

213131222030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269786443.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 213131222030 its reverse (30222131312), we get a palindrome (243353353342).

The spelling of 213131222030 in words is "two hundred thirteen billion, one hundred thirty-one million, two hundred twenty-two thousand, thirty".