1231333331332 has 24 divisors (see below), whose sum is σ = 2320668821016. Its totient is φ = 568288324608.

The previous prime is 1231333331329. The next prime is 1231333331369. The reversal of 1231333331332 is 2331333331321.

It can be written as a sum of positive squares in 4 ways, for example, as 308995903876 + 922337427456 = 555874^2 + 960384^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1231333331294 and 1231333331303.

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 7 ways as a sum of consecutive naturals, for example, 1197618 + ... + 1974070.

It is an arithmetic number, because the mean of its divisors is an integer number (96694534209).

Almost surely, 2^{1231333331332} is an apocalyptic number.

It is an amenable number.

1231333331332 is a deficient number, since it is larger than the sum of its proper divisors (1089335489684).

1231333331332 is a wasteful number, since it uses less digits than its factorization.

1231333331332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 806967 (or 806965 counting only the distinct ones).

The product of its digits is 26244, while the sum is 31.

Adding to 1231333331332 its reverse (2331333331321), we get a palindrome (3562666662653).

The spelling of 1231333331332 in words is "one trillion, two hundred thirty-one billion, three hundred thirty-three million, three hundred thirty-one thousand, three hundred thirty-two".