331043131 has 2 divisors, whose sum is σ = 331043132. Its totient is φ = 331043130.

The previous prime is 331043123. The next prime is 331043161. The reversal of 331043131 is 131340133.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 331043131 - 2³ = 331043123 is a prime.

It is a super-2 number, since 2×331043131² = 219179109164566322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 331043099 and 331043108.

It is not a weakly prime, because it can be changed into another prime (331043161) 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 as a sum of consecutive naturals, namely, 165521565 + 165521566.

It is an arithmetic number, because the mean of its divisors is an integer number (165521566).

Almost surely, 2^331043131 is an apocalyptic number.

331043131 is a deficient number, since it is larger than the sum of its proper divisors (1).

331043131 is an equidigital number, since it uses as much as digits as its factorization.

331043131 is an odious number, because the sum of its binary digits is odd.

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

The square root of 331043131 is about 18194.5907071305. The cubic root of 331043131 is about 691.7696860987.

Adding to 331043131 its reverse (131340133), we get a palindrome (462383264).

The spelling of 331043131 in words is "three hundred thirty-one million, forty-three thousand, one hundred thirty-one".