31003222223 has 4 divisors (see below), whose sum is σ = 31019481720. Its totient is φ = 30986962728.

The previous prime is 31003222199. The next prime is 31003222253. The reversal of 31003222223 is 32222230013.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32222230013 = 29077 ⋅1108169.

It is a cyclic number.

It is not a de Polignac number, because 31003222223 - 2¹⁴ = 31003205839 is a prime.

It is a super-2 number, since 2×31003222223² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31003222195 and 31003222204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31003222253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8126888 + ... + 8130701.

It is an arithmetic number, because the mean of its divisors is an integer number (7754870430).

Almost surely, 2^31003222223 is an apocalyptic number.

31003222223 is a deficient number, since it is larger than the sum of its proper divisors (16259497).

31003222223 is a wasteful number, since it uses less digits than its factorization.

31003222223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16259496.

The product of its (nonzero) digits is 864, while the sum is 20.

Adding to 31003222223 its reverse (32222230013), we get a palindrome (63225452236).

The spelling of 31003222223 in words is "thirty-one billion, three million, two hundred twenty-two thousand, two hundred twenty-three".