971252111 has 2 divisors, whose sum is σ = 971252112. Its totient is φ = 971252110.

The previous prime is 971252099. The next prime is 971252141. The reversal of 971252111 is 111252179.

It is a happy number.

971252111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 971252111 - 2¹⁰ = 971251087 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 (971252141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 485626055 + 485626056.

It is an arithmetic number, because the mean of its divisors is an integer number (485626056).

Almost surely, 2^971252111 is an apocalyptic number.

971252111 is a deficient number, since it is larger than the sum of its proper divisors (1).

971252111 is an equidigital number, since it uses as much as digits as its factorization.

971252111 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1260, while the sum is 29.

The square root of 971252111 is about 31164.9179527237. The cubic root of 971252111 is about 990.3240482585.

The spelling of 971252111 in words is "nine hundred seventy-one million, two hundred fifty-two thousand, one hundred eleven".