3131231223 has 8 divisors (see below), whose sum is σ = 4183479936. Its totient is φ = 2083235000.

The previous prime is 3131231221. The next prime is 3131231237. The reversal of 3131231223 is 3221321313.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3131231223 - 2¹ = 3131231221 is a prime.

It is a super-3 number, since 3×3131231223³ (a number of 29 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 3131231223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3131231221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1061403 + ... + 1064348.

It is an arithmetic number, because the mean of its divisors is an integer number (522934992).

Almost surely, 2^3131231223 is an apocalyptic number.

3131231223 is a deficient number, since it is larger than the sum of its proper divisors (1052248713).

3131231223 is a wasteful number, since it uses less digits than its factorization.

3131231223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2126245.

The product of its digits is 648, while the sum is 21.

The square root of 3131231223 is about 55957.4054348484. The cubic root of 3131231223 is about 1462.9799682888.

Adding to 3131231223 its reverse (3221321313), we get a palindrome (6352552536).

The spelling of 3131231223 in words is "three billion, one hundred thirty-one million, two hundred thirty-one thousand, two hundred twenty-three".