231130211222 has 8 divisors (see below), whose sum is σ = 346714119696. Its totient is φ = 115558837992.

The previous prime is 231130211219. The next prime is 231130211227. The reversal of 231130211222 is 222112031132.

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

It is a junction number, because it is equal to n+sod(n) for n = 231130211194 and 231130211203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231130211227) 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, 3087578 + ... + 3161549.

It is an arithmetic number, because the mean of its divisors is an integer number (43339264962).

Almost surely, 2^231130211222 is an apocalyptic number.

231130211222 is a deficient number, since it is larger than the sum of its proper divisors (115583908474).

231130211222 is a wasteful number, since it uses less digits than its factorization.

231130211222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6267622.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 231130211222 its reverse (222112031132), we get a palindrome (453242242354).

The spelling of 231130211222 in words is "two hundred thirty-one billion, one hundred thirty million, two hundred eleven thousand, two hundred twenty-two".