331143130 has 16 divisors (see below), whose sum is σ = 596771784. Its totient is φ = 132298560.

The previous prime is 331143097. The next prime is 331143133. The reversal of 331143130 is 31341133.

It can be written as a sum of positive squares in 4 ways, for example, as 200703889 + 130439241 = 14167^2 + 11421^2 .

It is a junction number, because it is equal to n+sod(n) for n = 331143098 and 331143107.

It is not an unprimeable number, because it can be changed into a prime (331143133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10881 + ... + 27940.

Almost surely, 2^331143130 is an apocalyptic number.

331143130 is a deficient number, since it is larger than the sum of its proper divisors (265628654).

331143130 is a wasteful number, since it uses less digits than its factorization.

331143130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39681.

The product of its (nonzero) digits is 324, while the sum is 19.

The square root of 331143130 is about 18197.3385416659. The cubic root of 331143130 is about 691.8393339342.

Adding to 331143130 its reverse (31341133), we get a palindrome (362484263).

The spelling of 331143130 in words is "three hundred thirty-one million, one hundred forty-three thousand, one hundred thirty".