3128723713 has 2 divisors, whose sum is σ = 3128723714. Its totient is φ = 3128723712.

The previous prime is 3128723693. The next prime is 3128723753. The reversal of 3128723713 is 3173278213.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2445005809 + 683717904 = 49447^2 + 26148^2 .

It is a cyclic number.

It is not a de Polignac number, because 3128723713 - 2¹³ = 3128715521 is a prime.

It is not a weakly prime, because it can be changed into another prime (3128723753) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1564361856 + 1564361857.

It is an arithmetic number, because the mean of its divisors is an integer number (1564361857).

Almost surely, 2^3128723713 is an apocalyptic number.

It is an amenable number.

3128723713 is a deficient number, since it is larger than the sum of its proper divisors (1).

3128723713 is an equidigital number, since it uses as much as digits as its factorization.

3128723713 is an evil number, because the sum of its binary digits is even.

The product of its digits is 42336, while the sum is 37.

The square root of 3128723713 is about 55934.9954232590. The cubic root of 3128723713 is about 1462.5893427584.

The spelling of 3128723713 in words is "three billion, one hundred twenty-eight million, seven hundred twenty-three thousand, seven hundred thirteen".