331567441 has 2 divisors, whose sum is σ = 331567442. Its totient is φ = 331567440.

The previous prime is 331567399. The next prime is 331567447. The reversal of 331567441 is 144765133.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 281568400 + 49999041 = 16780^2 + 7071^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-331567441 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 331567397 and 331567406.

It is not a weakly prime, because it can be changed into another prime (331567447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165783720 + 165783721.

It is an arithmetic number, because the mean of its divisors is an integer number (165783721).

Almost surely, 2^331567441 is an apocalyptic number.

It is an amenable number.

331567441 is a deficient number, since it is larger than the sum of its proper divisors (1).

331567441 is an equidigital number, since it uses as much as digits as its factorization.

331567441 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30240, while the sum is 34.

The square root of 331567441 is about 18208.9934098511. The cubic root of 331567441 is about 692.1347044449.

It can be divided in two parts, 3315 and 67441, that added together give a square (70756 = 266²).

The spelling of 331567441 in words is "three hundred thirty-one million, five hundred sixty-seven thousand, four hundred forty-one".