9121331 has 2 divisors, whose sum is σ = 9121332. Its totient is φ = 9121330.

The previous prime is 9121327. The next prime is 9121339. The reversal of 9121331 is 1331219.

9121331 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 9121331 - 2² = 9121327 is a prime.

It is a super-2 number, since 2×9121331² = 166397358423122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (9121339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4560665 + 4560666.

It is an arithmetic number, because the mean of its divisors is an integer number (4560666).

Almost surely, 2^9121331 is an apocalyptic number.

9121331 is a deficient number, since it is larger than the sum of its proper divisors (1).

9121331 is an equidigital number, since it uses as much as digits as its factorization.

9121331 is an evil number, because the sum of its binary digits is even.

The product of its digits is 162, while the sum is 20.

The square root of 9121331 is about 3020.1541351395. The cubic root of 9121331 is about 208.9389487667.

The spelling of 9121331 in words is "nine million, one hundred twenty-one thousand, three hundred thirty-one".