971411111 has 12 divisors (see below), whose sum is σ = 1074165456. Its totient is φ = 877794720.

The previous prime is 971411107. The next prime is 971411117. The reversal of 971411111 is 111114179.

It is not a de Polignac number, because 971411111 - 2² = 971411107 is a prime.

It is a Duffinian number.

971411111 is a modest number, since divided by 11111 gives 9714 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (971411117) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3830 + ... + 44243.

It is an arithmetic number, because the mean of its divisors is an integer number (89513788).

Almost surely, 2^971411111 is an apocalyptic number.

971411111 is a deficient number, since it is larger than the sum of its proper divisors (102754345).

971411111 is a wasteful number, since it uses less digits than its factorization.

971411111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48262 (or 48251 counting only the distinct ones).

The product of its digits is 252, while the sum is 26.

The square root of 971411111 is about 31167.4687935995. The cubic root of 971411111 is about 990.3780860413.

The spelling of 971411111 in words is "nine hundred seventy-one million, four hundred eleven thousand, one hundred eleven".