3131330123 has 2 divisors, whose sum is σ = 3131330124. Its totient is φ = 3131330122.

The previous prime is 3131330107. The next prime is 3131330143. The reversal of 3131330123 is 3210331313.

3131330123 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an a-pointer prime, because the next prime (3131330143) can be obtained adding 3131330123 to its sum of digits (20).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3131330123 - 2⁴ = 3131330107 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3131330095 and 3131330104.

It is not a weakly prime, because it can be changed into another prime (3131330143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1565665061 + 1565665062.

It is an arithmetic number, because the mean of its divisors is an integer number (1565665062).

Almost surely, 2^3131330123 is an apocalyptic number.

3131330123 is a deficient number, since it is larger than the sum of its proper divisors (1).

3131330123 is an equidigital number, since it uses as much as digits as its factorization.

3131330123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 486, while the sum is 20.

The square root of 3131330123 is about 55958.2891357482. The cubic root of 3131330123 is about 1462.9953708770.

Adding to 3131330123 its reverse (3210331313), we get a palindrome (6341661436).

The spelling of 3131330123 in words is "three billion, one hundred thirty-one million, three hundred thirty thousand, one hundred twenty-three".