31215443422223 has 16 divisors (see below), whose sum is σ = 31391185975776. Its totient is φ = 31040097730560.

The previous prime is 31215443422217. The next prime is 31215443422237. The reversal of 31215443422223 is 32222434451213.

It is a cyclic number.

It is not a de Polignac number, because 31215443422223 - 2⁴² = 26817396911119 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 (31215443422253) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1359368540 + ... + 1359391502.

It is an arithmetic number, because the mean of its divisors is an integer number (1961949123486).

Almost surely, 2^{31215443422223} is an apocalyptic number.

31215443422223 is a deficient number, since it is larger than the sum of its proper divisors (175742553553).

31215443422223 is a wasteful number, since it uses less digits than its factorization.

31215443422223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31274.

The product of its digits is 276480, while the sum is 38.

Adding to 31215443422223 its reverse (32222434451213), we get a palindrome (63437877873436).

The spelling of 31215443422223 in words is "thirty-one trillion, two hundred fifteen billion, four hundred forty-three million, four hundred twenty-two thousand, two hundred twenty-three".