3123321131 has 4 divisors (see below), whose sum is σ = 3569509872. Its totient is φ = 2677132392.

The previous prime is 3123321109. The next prime is 3123321151. The reversal of 3123321131 is 1311233213.

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

It is a cyclic number.

It is not a de Polignac number, because 3123321131 - 2¹⁰ = 3123320107 is a prime.

It is a super-2 number, since 2×3123321131² = 19510269774702238322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3123321151) 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, 223094360 + ... + 223094373.

It is an arithmetic number, because the mean of its divisors is an integer number (892377468).

Almost surely, 2^3123321131 is an apocalyptic number.

3123321131 is a deficient number, since it is larger than the sum of its proper divisors (446188741).

3123321131 is an equidigital number, since it uses as much as digits as its factorization.

3123321131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 446188740.

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

The square root of 3123321131 is about 55886.6811592887. The cubic root of 3123321131 is about 1461.7470065941.

Adding to 3123321131 its reverse (1311233213), we get a palindrome (4434554344).

The spelling of 3123321131 in words is "three billion, one hundred twenty-three million, three hundred twenty-one thousand, one hundred thirty-one".