8381303131 has 4 divisors (see below), whose sum is σ = 8381659600. Its totient is φ = 8380946664.

The previous prime is 8381303129. The next prime is 8381303143. The reversal of 8381303131 is 1313031838.

It is a happy number.

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 8381303131 - 2¹ = 8381303129 is a prime.

It is a super-2 number, since 2×8381303131² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8381303093 and 8381303102.

It is not an unprimeable number, because it can be changed into a prime (8381303171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 140271 + ... + 190888.

It is an arithmetic number, because the mean of its divisors is an integer number (2095414900).

Almost surely, 2^8381303131 is an apocalyptic number.

8381303131 is a deficient number, since it is larger than the sum of its proper divisors (356469).

8381303131 is a wasteful number, since it uses less digits than its factorization.

8381303131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 356468.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 8381303131 is about 91549.4572949507. The cubic root of 8381303131 is about 2031.2833845514.

Adding to 8381303131 its reverse (1313031838), we get a palindrome (9694334969).

The spelling of 8381303131 in words is "eight billion, three hundred eighty-one million, three hundred three thousand, one hundred thirty-one".