9121631 has 8 divisors (see below), whose sum is σ = 9504000. Its totient is φ = 8743840.

The previous prime is 9121627. The next prime is 9121649. The reversal of 9121631 is 1361219.

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 not a de Polignac number, because 9121631 - 2² = 9121627 is a prime.

It is a super-2 number, since 2×9121631² = 166408304200322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 9121597 and 9121606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9121601) 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, 3266 + ... + 5376.

It is an arithmetic number, because the mean of its divisors is an integer number (1188000).

Almost surely, 2^9121631 is an apocalyptic number.

9121631 is a deficient number, since it is larger than the sum of its proper divisors (382369).

9121631 is a wasteful number, since it uses less digits than its factorization.

9121631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2289.

The product of its digits is 324, while the sum is 23.

The square root of 9121631 is about 3020.2038010704. The cubic root of 9121631 is about 208.9412394046.

The spelling of 9121631 in words is "nine million, one hundred twenty-one thousand, six hundred thirty-one".