31132332223 has 4 divisors (see below), whose sum is σ = 31341274200. Its totient is φ = 30923390248.

The previous prime is 31132332193. The next prime is 31132332229. The reversal of 31132332223 is 32223323113.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 31132332223 - 2⁵ = 31132332191 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31132332229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 104470765 + ... + 104471062.

It is an arithmetic number, because the mean of its divisors is an integer number (7835318550).

Almost surely, 2^31132332223 is an apocalyptic number.

31132332223 is a deficient number, since it is larger than the sum of its proper divisors (208941977).

31132332223 is a wasteful number, since it uses less digits than its factorization.

31132332223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208941976.

The product of its digits is 3888, while the sum is 25.

Adding to 31132332223 its reverse (32223323113), we get a palindrome (63355655336).

The spelling of 31132332223 in words is "thirty-one billion, one hundred thirty-two million, three hundred thirty-two thousand, two hundred twenty-three".