31201123222223 has 4 divisors (see below), whose sum is σ = 32843287602360. Its totient is φ = 29558958842088.

The previous prime is 31201123222211. The next prime is 31201123222303. The reversal of 31201123222223 is 32222232110213.

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 31201123222223 - 2⁴ = 31201123222207 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31201123222192 and 31201123222201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31201123224223) 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, 821082190040 + ... + 821082190077.

It is an arithmetic number, because the mean of its divisors is an integer number (8210821900590).

Almost surely, 2^{31201123222223} is an apocalyptic number.

31201123222223 is a deficient number, since it is larger than the sum of its proper divisors (1642164380137).

31201123222223 is a wasteful number, since it uses less digits than its factorization.

31201123222223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1642164380136.

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 31201123222223 its reverse (32222232110213), we get a palindrome (63423355332436).

The spelling of 31201123222223 in words is "thirty-one trillion, two hundred one billion, one hundred twenty-three million, two hundred twenty-two thousand, two hundred twenty-three".