31330220223 has 8 divisors (see below), whose sum is σ = 41815783936. Its totient is φ = 20865735000.

The previous prime is 31330220219. The next prime is 31330220231. The reversal of 31330220223 is 32202203313.

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

It is not a de Polignac number, because 31330220223 - 2² = 31330220219 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 31330220223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31330220213) 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, 5266153 + ... + 5272098.

It is an arithmetic number, because the mean of its divisors is an integer number (5226972992).

Almost surely, 2^31330220223 is an apocalyptic number.

31330220223 is a deficient number, since it is larger than the sum of its proper divisors (10485563713).

31330220223 is a wasteful number, since it uses less digits than its factorization.

31330220223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10539245.

The product of its (nonzero) digits is 1296, while the sum is 21.

Adding to 31330220223 its reverse (32202203313), we get a palindrome (63532423536).

The spelling of 31330220223 in words is "thirty-one billion, three hundred thirty million, two hundred twenty thousand, two hundred twenty-three".