8641402331 has 16 divisors (see below), whose sum is σ = 9349979040. Its totient is φ = 7960942080.

The previous prime is 8641402321. The next prime is 8641402333. The reversal of 8641402331 is 1332041468.

It is a cyclic number.

It is not a de Polignac number, because 8641402331 - 2⁶ = 8641402267 is a prime.

It is a super-2 number, since 2×8641402331² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (8641402333) 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, 75821 + ... + 151761.

It is an arithmetic number, because the mean of its divisors is an integer number (584373690).

Almost surely, 2^8641402331 is an apocalyptic number.

8641402331 is a deficient number, since it is larger than the sum of its proper divisors (708576709).

8641402331 is a wasteful number, since it uses less digits than its factorization.

8641402331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76126.

The product of its (nonzero) digits is 13824, while the sum is 32.

The square root of 8641402331 is about 92959.1433426535. The cubic root of 8641402331 is about 2052.0821463156.

Adding to 8641402331 its reverse (1332041468), we get a palindrome (9973443799).

The spelling of 8641402331 in words is "eight billion, six hundred forty-one million, four hundred two thousand, three hundred thirty-one".