8631099321 has 16 divisors (see below), whose sum is σ = 12603433920. Its totient is φ = 5221419840.

The previous prime is 8631099307. The next prime is 8631099331. The reversal of 8631099321 is 1239901368.

It is not a de Polignac number, because 8631099321 - 2⁵ = 8631099289 is a prime.

It is a super-2 number, since 2×8631099321² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (8631099331) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1873210 + ... + 1877811.

It is an arithmetic number, because the mean of its divisors is an integer number (787714620).

Almost surely, 2^8631099321 is an apocalyptic number.

It is an amenable number.

8631099321 is a deficient number, since it is larger than the sum of its proper divisors (3972334599).

8631099321 is a wasteful number, since it uses less digits than its factorization.

8631099321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3751096.

The product of its (nonzero) digits is 69984, while the sum is 42.

The square root of 8631099321 is about 92903.7099420685. The cubic root of 8631099321 is about 2051.2662667354.

The spelling of 8631099321 in words is "eight billion, six hundred thirty-one million, ninety-nine thousand, three hundred twenty-one".