31223302123 has 6 divisors (see below), whose sum is σ = 33809848044. Its totient is φ = 28821509496.

The previous prime is 31223302111. The next prime is 31223302133. The reversal of 31223302123 is 32120332213.

It is not a de Polignac number, because 31223302123 - 2³³ = 22633367531 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31223302094 and 31223302103.

It is not an unprimeable number, because it can be changed into a prime (31223302133) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 92376465 + ... + 92376802.

It is an arithmetic number, because the mean of its divisors is an integer number (5634974674).

Almost surely, 2^31223302123 is an apocalyptic number.

31223302123 is a deficient number, since it is larger than the sum of its proper divisors (2586545921).

31223302123 is a wasteful number, since it uses less digits than its factorization.

31223302123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184753293 (or 184753280 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 31223302123 its reverse (32120332213), we get a palindrome (63343634336).

The spelling of 31223302123 in words is "thirty-one billion, two hundred twenty-three million, three hundred two thousand, one hundred twenty-three".