3128850997 has 2 divisors, whose sum is σ = 3128850998. Its totient is φ = 3128850996.

The previous prime is 3128850953. The next prime is 3128851001. The reversal of 3128850997 is 7990588213.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2894332401 + 234518596 = 53799^2 + 15314^2 .

It is an emirp because it is prime and its reverse (7990588213) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3128850997 is a prime.

It is a super-2 number, since 2×3128850997² = 19579417122855788018, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3128850937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1564425498 + 1564425499.

It is an arithmetic number, because the mean of its divisors is an integer number (1564425499).

Almost surely, 2^3128850997 is an apocalyptic number.

It is an amenable number.

3128850997 is a deficient number, since it is larger than the sum of its proper divisors (1).

3128850997 is an equidigital number, since it uses as much as digits as its factorization.

3128850997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1088640, while the sum is 52.

The square root of 3128850997 is about 55936.1331967093. The cubic root of 3128850997 is about 1462.6091763726.

The spelling of 3128850997 in words is "three billion, one hundred twenty-eight million, eight hundred fifty thousand, nine hundred ninety-seven".