231312223130312 has 16 divisors (see below), whose sum is σ = 433719741561840. Its totient is φ = 115653625380496.

The previous prime is 231312223130297. The next prime is 231312223130411. The reversal of 231312223130312 is 213031322213132.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 310377638 + ... + 311122005.

It is an arithmetic number, because the mean of its divisors is an integer number (27107483847615).

Almost surely, 2^{231312223130312} is an apocalyptic number.

It is an amenable number.

231312223130312 is a deficient number, since it is larger than the sum of its proper divisors (202407518431528).

231312223130312 is a wasteful number, since it uses less digits than its factorization.

231312223130312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 621546172 (or 621546168 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 29.

Adding to 231312223130312 its reverse (213031322213132), we get a palindrome (444343545343444).

The spelling of 231312223130312 in words is "two hundred thirty-one trillion, three hundred twelve billion, two hundred twenty-three million, one hundred thirty thousand, three hundred twelve".