231303203212 has 24 divisors (see below), whose sum is σ = 417959478272. Its totient is φ = 111888378000.

The previous prime is 231303203171. The next prime is 231303203227. The reversal of 231303203212 is 212302303132.

It is a super-2 number, since 2×231303203212² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 160087 + ... + 698737.

Almost surely, 2^231303203212 is an apocalyptic number.

It is an amenable number.

231303203212 is a deficient number, since it is larger than the sum of its proper divisors (186656275060).

231303203212 is a wasteful number, since it uses less digits than its factorization.

231303203212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 542149 (or 542147 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 231303203212 its reverse (212302303132), we get a palindrome (443605506344).

The spelling of 231303203212 in words is "two hundred thirty-one billion, three hundred three million, two hundred three thousand, two hundred twelve".