115728971 has 2 divisors, whose sum is σ = 115728972. Its totient is φ = 115728970.

The previous prime is 115728961. The next prime is 115728973. The reversal of 115728971 is 179827511.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 115728971 - 2¹⁴ = 115712587 is a prime.

Together with 115728973, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (115728973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57864485 + 57864486.

It is an arithmetic number, because the mean of its divisors is an integer number (57864486).

Almost surely, 2^115728971 is an apocalyptic number.

115728971 is a deficient number, since it is larger than the sum of its proper divisors (1).

115728971 is an equidigital number, since it uses as much as digits as its factorization.

115728971 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 35280, while the sum is 41.

The square root of 115728971 is about 10757.7400507727. The cubic root of 115728971 is about 487.3197699754.

The spelling of 115728971 in words is "one hundred fifteen million, seven hundred twenty-eight thousand, nine hundred seventy-one".