231312311312 has 10 divisors (see below), whose sum is σ = 448167603198. Its totient is φ = 115656155648.

The previous prime is 231312311257. The next prime is 231312311317. The reversal of 231312311312 is 213113213132.

231312311312 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 231307131136 + 5180176 = 480944^2 + 2276^2 .

It is a super-2 number, since 2×231312311312² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (231312311317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7228509713 + ... + 7228509744.

Almost surely, 2^231312311312 is an apocalyptic number.

It is an amenable number.

231312311312 is a deficient number, since it is larger than the sum of its proper divisors (216855291886).

231312311312 is a wasteful number, since it uses less digits than its factorization.

231312311312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14457019465 (or 14457019459 counting only the distinct ones).

The product of its digits is 648, while the sum is 23.

Adding to 231312311312 its reverse (213113213132), we get a palindrome (444425524444).

The spelling of 231312311312 in words is "two hundred thirty-one billion, three hundred twelve million, three hundred eleven thousand, three hundred twelve".