3131131223 has 16 divisors (see below), whose sum is σ = 3529930752. Its totient is φ = 2751564000.

The previous prime is 3131131193. The next prime is 3131131249. The reversal of 3131131223 is 3221311313.

3131131223 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 3131131223 - 2¹⁰ = 3131130199 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3131131195 and 3131131204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3131136223) 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, 330533 + ... + 339873.

It is an arithmetic number, because the mean of its divisors is an integer number (220620672).

Almost surely, 2^3131131223 is an apocalyptic number.

3131131223 is a deficient number, since it is larger than the sum of its proper divisors (398799529).

3131131223 is a wasteful number, since it uses less digits than its factorization.

3131131223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10366.

The product of its digits is 324, while the sum is 20.

The square root of 3131131223 is about 55956.5118909319. The cubic root of 3131131223 is about 1462.9643940579.

Adding to 3131131223 its reverse (3221311313), we get a palindrome (6352442536).

The spelling of 3131131223 in words is "three billion, one hundred thirty-one million, one hundred thirty-one thousand, two hundred twenty-three".