31332120223 has 4 divisors (see below), whose sum is σ = 31332485448. Its totient is φ = 31331755000.

The previous prime is 31332120191. The next prime is 31332120241. The reversal of 31332120223 is 32202123313.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 32202123313 = 34939 ⋅921667.

It is a cyclic number.

It is not a de Polignac number, because 31332120223 - 2⁵ = 31332120191 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31332120194 and 31332120203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31332120023) 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, 23973 + ... + 251473.

It is an arithmetic number, because the mean of its divisors is an integer number (7833121362).

Almost surely, 2^31332120223 is an apocalyptic number.

31332120223 is a deficient number, since it is larger than the sum of its proper divisors (365225).

31332120223 is a wasteful number, since it uses less digits than its factorization.

31332120223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 365224.

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

Adding to 31332120223 its reverse (32202123313), we get a palindrome (63534243536).

The spelling of 31332120223 in words is "thirty-one billion, three hundred thirty-two million, one hundred twenty thousand, two hundred twenty-three".