8221403431 has 4 divisors (see below), whose sum is σ = 8223073632. Its totient is φ = 8219733232.

The previous prime is 8221403413. The next prime is 8221403461. The reversal of 8221403431 is 1343041228.

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 8221403431 - 2²⁷ = 8087185703 is a prime.

It is a super-2 number, since 2×8221403431² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8221403431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8221403461) 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, 827695 + ... + 837568.

It is an arithmetic number, because the mean of its divisors is an integer number (2055768408).

Almost surely, 2^8221403431 is an apocalyptic number.

8221403431 is a deficient number, since it is larger than the sum of its proper divisors (1670201).

8221403431 is a wasteful number, since it uses less digits than its factorization.

8221403431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1670200.

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 8221403431 is about 90671.9550412364. The cubic root of 8221403431 is about 2018.2826490329.

Adding to 8221403431 its reverse (1343041228), we get a palindrome (9564444659).

The spelling of 8221403431 in words is "eight billion, two hundred twenty-one million, four hundred three thousand, four hundred thirty-one".