971333681 has 8 divisors (see below), whose sum is σ = 980711904. Its totient is φ = 962000640.

The previous prime is 971333663. The next prime is 971333687. The reversal of 971333681 is 186333179.

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

It is a cyclic number.

It is not a de Polignac number, because 971333681 - 2²⁶ = 904224817 is a prime.

It is a super-2 number, since 2×971333681² = 1886978239690019522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (971333687) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32726 + ... + 54896.

It is an arithmetic number, because the mean of its divisors is an integer number (122588988).

Almost surely, 2^971333681 is an apocalyptic number.

It is an amenable number.

971333681 is a deficient number, since it is larger than the sum of its proper divisors (9378223).

971333681 is a wasteful number, since it uses less digits than its factorization.

971333681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22591.

The product of its digits is 81648, while the sum is 41.

The square root of 971333681 is about 31166.2266083015. The cubic root of 971333681 is about 990.3517713973.

The spelling of 971333681 in words is "nine hundred seventy-one million, three hundred thirty-three thousand, six hundred eighty-one".