31223303343 has 24 divisors (see below), whose sum is σ = 45974131632. Its totient is φ = 20412632448.

The previous prime is 31223303339. The next prime is 31223303359. The reversal of 31223303343 is 34330332213.

It is a happy number.

31223303343 is a `hidden beast` number, since 3 + 12 + 2 + 3 + 303 + 343 = 666.

It is not a de Polignac number, because 31223303343 - 2² = 31223303339 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31223303333) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 1011780 + ... + 1042182.

It is an arithmetic number, because the mean of its divisors is an integer number (1915588818).

Almost surely, 2^31223303343 is an apocalyptic number.

31223303343 is a deficient number, since it is larger than the sum of its proper divisors (14750828289).

31223303343 is a wasteful number, since it uses less digits than its factorization.

31223303343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32615 (or 32612 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 27.

Adding to 31223303343 its reverse (34330332213), we get a palindrome (65553635556).

The spelling of 31223303343 in words is "thirty-one billion, two hundred twenty-three million, three hundred three thousand, three hundred forty-three".