9081631 has 8 divisors (see below), whose sum is σ = 9812880. Its totient is φ = 8355072.

The previous prime is 9081607. The next prime is 9081637. The reversal of 9081631 is 1361809.

It is a happy number.

9081631 is digitally balanced in base 2, because in such base 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 a cyclic number.

It is not a de Polignac number, because 9081631 - 2⁵ = 9081599 is a prime.

It is a super-2 number, since 2×9081631² = 164952043240322, which contains 22 as substring.

It is a Duffinian number.

9081631 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 9081631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9081637) 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, 3600 + ... + 5578.

It is an arithmetic number, because the mean of its divisors is an integer number (1226610).

Almost surely, 2^9081631 is an apocalyptic number.

9081631 is a deficient number, since it is larger than the sum of its proper divisors (731249).

9081631 is a wasteful number, since it uses less digits than its factorization.

9081631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2345.

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 9081631 is about 3013.5744556921. The cubic root of 9081631 is about 208.6353768519.

The spelling of 9081631 in words is "nine million, eighty-one thousand, six hundred thirty-one".