10128997 has 2 divisors, whose sum is σ = 10128998. Its totient is φ = 10128996.

The previous prime is 10128973. The next prime is 10129003. The reversal of 10128997 is 79982101.

10128997 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10042561 + 86436 = 3169^2 + 294^2 .

It is an emirp because it is prime and its reverse (79982101) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 10128997 - 2⁷ = 10128869 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10128907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5064498 + 5064499.

It is an arithmetic number, because the mean of its divisors is an integer number (5064499).

Almost surely, 2^10128997 is an apocalyptic number.

It is an amenable number.

10128997 is a deficient number, since it is larger than the sum of its proper divisors (1).

10128997 is an equidigital number, since it uses as much as digits as its factorization.

10128997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072, while the sum is 37.

The square root of 10128997 is about 3182.6085213233. The cubic root of 10128997 is about 216.3658993147.

The spelling of 10128997 in words is "ten million, one hundred twenty-eight thousand, nine hundred ninety-seven".