31323022223 has 8 divisors (see below), whose sum is σ = 34911108720. Its totient is φ = 27928886400.

The previous prime is 31323022193. The next prime is 31323022249. The reversal of 31323022223 is 32222032313.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31323022223 is a prime.

It is a super-2 number, since 2×31323022223² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31323022823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48487328 + ... + 48487973.

It is an arithmetic number, because the mean of its divisors is an integer number (4363888590).

Almost surely, 2^31323022223 is an apocalyptic number.

31323022223 is a deficient number, since it is larger than the sum of its proper divisors (3588086497).

31323022223 is a wasteful number, since it uses less digits than its factorization.

31323022223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96975337.

The product of its (nonzero) digits is 2592, while the sum is 23.

Adding to 31323022223 its reverse (32222032313), we get a palindrome (63545054536).

The spelling of 31323022223 in words is "thirty-one billion, three hundred twenty-three million, twenty-two thousand, two hundred twenty-three".