3121231144 has 16 divisors (see below), whose sum is σ = 6196562100. Its totient is φ = 1468814592.

The previous prime is 3121231129. The next prime is 3121231171. The reversal of 3121231144 is 4411321213.

It can be written as a sum of positive squares in 2 ways, for example, as 3117882244 + 3348900 = 55838^2 + 1830^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11474979 + ... + 11475250.

Almost surely, 2^3121231144 is an apocalyptic number.

3121231144 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

It is an amenable number.

3121231144 is a deficient number, since it is larger than the sum of its proper divisors (3075330956).

3121231144 is a wasteful number, since it uses less digits than its factorization.

3121231144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22950252 (or 22950248 counting only the distinct ones).

The product of its digits is 576, while the sum is 22.

The square root of 3121231144 is about 55867.9795947553. The cubic root of 3121231144 is about 1461.4208885724.

Adding to 3121231144 its reverse (4411321213), we get a palindrome (7532552357).

The spelling of 3121231144 in words is "three billion, one hundred twenty-one million, two hundred thirty-one thousand, one hundred forty-four".