3131223452 has 24 divisors (see below), whose sum is σ = 6365113440. Its totient is φ = 1319952960.

The previous prime is 3131223451. The next prime is 3131223533. The reversal of 3131223452 is 2543221313.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3131223451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 914927 + ... + 918342.

It is an arithmetic number, because the mean of its divisors is an integer number (265213060).

Almost surely, 2^3131223452 is an apocalyptic number.

It is an amenable number.

3131223452 is an abundant number, since it is smaller than the sum of its proper divisors (3233889988).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3131223452 is a wasteful number, since it uses less digits than its factorization.

3131223452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1833341 (or 1833339 counting only the distinct ones).

The product of its digits is 4320, while the sum is 26.

The square root of 3131223452 is about 55957.3359980620. The cubic root of 3131223452 is about 1462.9787580272.

Adding to 3131223452 its reverse (2543221313), we get a palindrome (5674444765).

The spelling of 3131223452 in words is "three billion, one hundred thirty-one million, two hundred twenty-three thousand, four hundred fifty-two".