1231313312322 has 48 divisors (see below), whose sum is σ = 2733773945760. Its totient is φ = 400401144000.

The previous prime is 1231313312249. The next prime is 1231313312323. The reversal of 1231313312322 is 2232133131321.

1231313312322 is a `hidden beast` number, since 1 + 2 + 3 + 1 + 3 + 1 + 331 + 2 + 322 = 666.

It is a super-2 number, since 2×1231313312322² (a number of 25 digits) contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (1231313312323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4286179 + ... + 4564422.

It is an arithmetic number, because the mean of its divisors is an integer number (56953623870).

Almost surely, 2^{1231313312322} is an apocalyptic number.

1231313312322 is an abundant number, since it is smaller than the sum of its proper divisors (1502460633438).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1231313312322 is a wasteful number, since it uses less digits than its factorization.

1231313312322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8850799 (or 8850796 counting only the distinct ones).

The product of its digits is 3888, while the sum is 27.

Adding to 1231313312322 its reverse (2232133131321), we get a palindrome (3463446443643).

The spelling of 1231313312322 in words is "one trillion, two hundred thirty-one billion, three hundred thirteen million, three hundred twelve thousand, three hundred twenty-two".