3123131122 has 4 divisors (see below), whose sum is σ = 4684696686. Its totient is φ = 1561565560.

The previous prime is 3123131119. The next prime is 3123131147. The reversal of 3123131122 is 2211313213.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1714705281 + 1408425841 = 41409^2 + 37529^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 3123131122.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 780782779 + ... + 780782782.

Almost surely, 2^3123131122 is an apocalyptic number.

3123131122 is a deficient number, since it is larger than the sum of its proper divisors (1561565564).

3123131122 is a wasteful number, since it uses less digits than its factorization.

3123131122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1561565563.

The product of its digits is 216, while the sum is 19.

The square root of 3123131122 is about 55884.9811845723. The cubic root of 3123131122 is about 1461.7173639255.

Adding to 3123131122 its reverse (2211313213), we get a palindrome (5334444335).

The spelling of 3123131122 in words is "three billion, one hundred twenty-three million, one hundred thirty-one thousand, one hundred twenty-two".