8421880331 has 4 divisors (see below), whose sum is σ = 8422544952. Its totient is φ = 8421215712.

The previous prime is 8421880309. The next prime is 8421880333. The reversal of 8421880331 is 1330881248.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 8421880331 - 2¹⁰ = 8421879307 is a prime.

It is a super-2 number, since 2×8421880331² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8421880333) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 312926 + ... + 338771.

It is an arithmetic number, because the mean of its divisors is an integer number (2105636238).

Almost surely, 2^8421880331 is an apocalyptic number.

8421880331 is a deficient number, since it is larger than the sum of its proper divisors (664621).

8421880331 is a wasteful number, since it uses less digits than its factorization.

8421880331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 664620.

The product of its (nonzero) digits is 36864, while the sum is 38.

The square root of 8421880331 is about 91770.8032600783. The cubic root of 8421880331 is about 2034.5561903868.

The spelling of 8421880331 in words is "eight billion, four hundred twenty-one million, eight hundred eighty thousand, three hundred thirty-one".