8131330 has 8 divisors (see below), whose sum is σ = 14636412. Its totient is φ = 3252528.

The previous prime is 8131327. The next prime is 8131337. The reversal of 8131330 is 331318.

It can be written as a sum of positive squares in 2 ways, for example, as 8105409 + 25921 = 2847^2 + 161^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×8131330² = 132237055137800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 8131298 and 8131307.

It is not an unprimeable number, because it can be changed into a prime (8131337) 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, 406557 + ... + 406576.

Almost surely, 2^8131330 is an apocalyptic number.

8131330 is a deficient number, since it is larger than the sum of its proper divisors (6505082).

8131330 is a wasteful number, since it uses less digits than its factorization.

8131330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 813140.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 8131330 is about 2851.5487020214. The cubic root of 8131330 is about 201.0884819550.

Adding to 8131330 its reverse (331318), we get a palindrome (8462648).

The spelling of 8131330 in words is "eight million, one hundred thirty-one thousand, three hundred thirty".