31223223299 has 4 divisors (see below), whose sum is σ = 31263826440. Its totient is φ = 31182620160.

The previous prime is 31223223293. The next prime is 31223223329. The reversal of 31223223299 is 99232232213.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99232232213 = 67289 ⋅1474717.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31223223299 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31223223293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20300417 + ... + 20301954.

It is an arithmetic number, because the mean of its divisors is an integer number (7815956610).

Almost surely, 2^31223223299 is an apocalyptic number.

31223223299 is a deficient number, since it is larger than the sum of its proper divisors (40603141).

31223223299 is an equidigital number, since it uses as much as digits as its factorization.

31223223299 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40603140.

The product of its digits is 69984, while the sum is 38.

The spelling of 31223223299 in words is "thirty-one billion, two hundred twenty-three million, two hundred twenty-three thousand, two hundred ninety-nine".