9731121 has 8 divisors (see below), whose sum is σ = 13077504. Its totient is φ = 6436080.

The previous prime is 9731101. The next prime is 9731143. The reversal of 9731121 is 1211379.

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

It is a de Polignac number, because none of the positive numbers 2^k-9731121 is a prime.

It is a Curzon number.

9731121 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 9731091 and 9731100.

It is not an unprimeable number, because it can be changed into a prime (9731101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12390 + ... + 13151.

It is an arithmetic number, because the mean of its divisors is an integer number (1634688).

Almost surely, 2^9731121 is an apocalyptic number.

It is an amenable number.

9731121 is a deficient number, since it is larger than the sum of its proper divisors (3346383).

9731121 is a wasteful number, since it uses less digits than its factorization.

9731121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25671.

The product of its digits is 378, while the sum is 24.

The square root of 9731121 is about 3119.4744749717. The cubic root of 9731121 is about 213.4949586277.

The spelling of 9731121 in words is "nine million, seven hundred thirty-one thousand, one hundred twenty-one".