971198209371 has 16 divisors (see below), whose sum is σ = 1403776398080. Its totient is φ = 593702416800.

The previous prime is 971198209363. The next prime is 971198209379. The reversal of 971198209371 is 173902891179.

It is an interprime number because it is at equal distance from previous prime (971198209363) and next prime (971198209379).

It is not a de Polignac number, because 971198209371 - 2³ = 971198209363 is a prime.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (971198209379) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 82452781 + ... + 82464558.

It is an arithmetic number, because the mean of its divisors is an integer number (87736024880).

Almost surely, 2^971198209371 is an apocalyptic number.

971198209371 is a deficient number, since it is larger than the sum of its proper divisors (432578188709).

971198209371 is a wasteful number, since it uses less digits than its factorization.

971198209371 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164917506.

The product of its (nonzero) digits is 1714608, while the sum is 57.

The spelling of 971198209371 in words is "nine hundred seventy-one billion, one hundred ninety-eight million, two hundred nine thousand, three hundred seventy-one".