231313230212 has 6 divisors (see below), whose sum is σ = 404798152878. Its totient is φ = 115656615104.

The previous prime is 231313230209. The next prime is 231313230233. The reversal of 231313230212 is 212032313132.

It can be written as a sum of positive squares in only one way, i.e., 170177700676 + 61135529536 = 412526^2 + 247256^2 .

It is a super-2 number, since 2×231313230212² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28914153773 + ... + 28914153780.

It is an arithmetic number, because the mean of its divisors is an integer number (67466358813).

Almost surely, 2^231313230212 is an apocalyptic number.

It is an amenable number.

231313230212 is a deficient number, since it is larger than the sum of its proper divisors (173484922666).

231313230212 is a wasteful number, since it uses less digits than its factorization.

231313230212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57828307557 (or 57828307555 counting only the distinct ones).

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

Adding to 231313230212 its reverse (212032313132), we get a palindrome (443345543344).

The spelling of 231313230212 in words is "two hundred thirty-one billion, three hundred thirteen million, two hundred thirty thousand, two hundred twelve".