3131232223 has 4 divisors (see below), whose sum is σ = 3578551120. Its totient is φ = 2683913328.

The previous prime is 3131232217. The next prime is 3131232253. The reversal of 3131232223 is 3222321313.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3222321313 = 21179 ⋅152147.

It is a cyclic number.

It is not a de Polignac number, because 3131232223 - 2²⁹ = 2594361311 is a prime.

It is a super-3 number, since 3×3131232223³ (a number of 29 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3131232194 and 3131232203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3131232253) 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, 223659438 + ... + 223659451.

It is an arithmetic number, because the mean of its divisors is an integer number (894637780).

Almost surely, 2^3131232223 is an apocalyptic number.

3131232223 is a deficient number, since it is larger than the sum of its proper divisors (447318897).

3131232223 is an equidigital number, since it uses as much as digits as its factorization.

3131232223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 447318896.

The product of its digits is 1296, while the sum is 22.

The square root of 3131232223 is about 55957.4143702155. The cubic root of 3131232223 is about 1462.9801240294.

Adding to 3131232223 its reverse (3222321313), we get a palindrome (6353553536).

The spelling of 3131232223 in words is "three billion, one hundred thirty-one million, two hundred thirty-two thousand, two hundred twenty-three".