31131103330223 has 16 divisors (see below), whose sum is σ = 33710092416000. Its totient is φ = 28578576803040.

The previous prime is 31131103330189. The next prime is 31131103330237. The reversal of 31131103330223 is 32203330113113.

It is a cyclic number.

It is not a de Polignac number, because 31131103330223 - 2²⁶ = 31131036221359 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31131103330192 and 31131103330201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31131103335223) 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, 2689418 + ... + 8336376.

It is an arithmetic number, because the mean of its divisors is an integer number (2106880776000).

Almost surely, 2^{31131103330223} is an apocalyptic number.

31131103330223 is a deficient number, since it is larger than the sum of its proper divisors (2578989085777).

31131103330223 is a wasteful number, since it uses less digits than its factorization.

31131103330223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5649302.

The product of its (nonzero) digits is 2916, while the sum is 26.

Adding to 31131103330223 its reverse (32203330113113), we get a palindrome (63334433443336).

The spelling of 31131103330223 in words is "thirty-one trillion, one hundred thirty-one billion, one hundred three million, three hundred thirty thousand, two hundred twenty-three".