31113021223 has 8 divisors (see below), whose sum is σ = 33234733728. Its totient is φ = 29023701504.

The previous prime is 31113021221. The next prime is 31113021293. The reversal of 31113021223 is 32212031113.

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

It is a cyclic number.

It is not a de Polignac number, because 31113021223 - 2¹ = 31113021221 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31113021223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31113021221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8096211 + ... + 8100052.

It is an arithmetic number, because the mean of its divisors is an integer number (4154341716).

Almost surely, 2^31113021223 is an apocalyptic number.

31113021223 is a deficient number, since it is larger than the sum of its proper divisors (2121712505).

31113021223 is a wasteful number, since it uses less digits than its factorization.

31113021223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16196393.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 31113021223 its reverse (32212031113), we get a palindrome (63325052336).

The spelling of 31113021223 in words is "thirty-one billion, one hundred thirteen million, twenty-one thousand, two hundred twenty-three".