8431991348 has 24 divisors (see below), whose sum is σ = 16110329760. Its totient is φ = 3829653920.

The previous prime is 8431991297. The next prime is 8431991353.

8431991348 is nontrivially palindromic in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 8431991296 and 8431991305.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20711 + ... + 131502.

It is an arithmetic number, because the mean of its divisors is an integer number (671263740).

Almost surely, 2^8431991348 is an apocalyptic number.

It is an amenable number.

8431991348 is a deficient number, since it is larger than the sum of its proper divisors (7678338412).

8431991348 is a wasteful number, since it uses less digits than its factorization.

8431991348 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153487 (or 153485 counting only the distinct ones).

The product of its digits is 746496, while the sum is 50.

The square root of 8431991348 is about 91825.8751550999. The cubic root of 8431991348 is about 2035.3700705995.

The spelling of 8431991348 in words is "eight billion, four hundred thirty-one million, nine hundred ninety-one thousand, three hundred forty-eight".