8404943131 has 4 divisors (see below), whose sum is σ = 9051477232. Its totient is φ = 7758409032.

The previous prime is 8404943093. The next prime is 8404943143. The reversal of 8404943131 is 1313494048.

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 8404943131 - 2⁷ = 8404943003 is a prime.

It is a super-2 number, since 2×8404943131² (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 (8404953131) 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, 323267031 + ... + 323267056.

It is an arithmetic number, because the mean of its divisors is an integer number (2262869308).

Almost surely, 2^8404943131 is an apocalyptic number.

8404943131 is a deficient number, since it is larger than the sum of its proper divisors (646534101).

8404943131 is a wasteful number, since it uses less digits than its factorization.

8404943131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 646534100.

The product of its (nonzero) digits is 41472, while the sum is 37.

The square root of 8404943131 is about 91678.4769234306. The cubic root of 8404943131 is about 2033.1913799106.

The spelling of 8404943131 in words is "eight billion, four hundred four million, nine hundred forty-three thousand, one hundred thirty-one".