31233222989 has 16 divisors (see below), whose sum is σ = 32506978944. Its totient is φ = 29985076800.

The previous prime is 31233222959. The next prime is 31233222997. The reversal of 31233222989 is 98922233213.

It is a cyclic number.

It is not a de Polignac number, because 31233222989 - 2⁸ = 31233222733 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31233222959) 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 in 15 ways as a sum of consecutive naturals, for example, 4542224 + ... + 4549094.

It is an arithmetic number, because the mean of its divisors is an integer number (2031686184).

Almost surely, 2^31233222989 is an apocalyptic number.

It is an amenable number.

31233222989 is a deficient number, since it is larger than the sum of its proper divisors (1273755955).

31233222989 is a wasteful number, since it uses less digits than its factorization.

31233222989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8708.

The product of its digits is 279936, while the sum is 44.

The spelling of 31233222989 in words is "thirty-one billion, two hundred thirty-three million, two hundred twenty-two thousand, nine hundred eighty-nine".