9971311 has 8 divisors (see below), whose sum is σ = 11556864. Its totient is φ = 8426040.

The previous prime is 9971303. The next prime is 9971341. The reversal of 9971311 is 1131799.

9971311 is digitally balanced in base 2, base 3 and base 8, because in such bases it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 9971311 - 2³ = 9971303 is a prime.

It is an Ulam number.

It is a Duffinian number.

9971311 is strictly pandigital in base 8.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9971341) 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, 9535 + ... + 10528.

It is an arithmetic number, because the mean of its divisors is an integer number (1444608).

Almost surely, 2^9971311 is an apocalyptic number.

9971311 is a deficient number, since it is larger than the sum of its proper divisors (1585553).

9971311 is a wasteful number, since it uses less digits than its factorization.

9971311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20141.

The product of its digits is 1701, while the sum is 31.

The square root of 9971311 is about 3157.7382728782. The cubic root of 9971311 is about 215.2372430740.

The spelling of 9971311 in words is "nine million, nine hundred seventy-one thousand, three hundred eleven".