971881345 has 8 divisors (see below), whose sum is σ = 1168064064. Its totient is φ = 776300784.

The previous prime is 971881301. The next prime is 971881357. The reversal of 971881345 is 543188179.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-971881345 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 971881295 and 971881304.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 146979 + ... + 153448.

It is an arithmetic number, because the mean of its divisors is an integer number (146008008).

Almost surely, 2^971881345 is an apocalyptic number.

It is an amenable number.

971881345 is a deficient number, since it is larger than the sum of its proper divisors (196182719).

971881345 is a wasteful number, since it uses less digits than its factorization.

971881345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 301079.

The product of its digits is 241920, while the sum is 46.

The square root of 971881345 is about 31175.0115477124. The cubic root of 971881345 is about 990.5378653967.

The spelling of 971881345 in words is "nine hundred seventy-one million, eight hundred eighty-one thousand, three hundred forty-five".