321231131212 has 12 divisors (see below), whose sum is σ = 562174557840. Its totient is φ = 160609828976.

The previous prime is 321231131203. The next prime is 321231131233. The reversal of 321231131212 is 212131132123.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1306912 + ... + 1533127.

It is an arithmetic number, because the mean of its divisors is an integer number (46847879820).

Almost surely, 2^321231131212 is an apocalyptic number.

It is an amenable number.

321231131212 is a deficient number, since it is larger than the sum of its proper divisors (240943426628).

321231131212 is a wasteful number, since it uses less digits than its factorization.

321231131212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2868320 (or 2868318 counting only the distinct ones).

The product of its digits is 432, while the sum is 22.

Adding to 321231131212 its reverse (212131132123), we get a palindrome (533362263335).

The spelling of 321231131212 in words is "three hundred twenty-one billion, two hundred thirty-one million, one hundred thirty-one thousand, two hundred twelve".