441021131 has 2 divisors, whose sum is σ = 441021132. Its totient is φ = 441021130.

The previous prime is 441021121. The next prime is 441021137. The reversal of 441021131 is 131120144.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-441021131 is a prime.

It is a super-2 number, since 2×441021131² = 388999275977038322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (441021137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 220510565 + 220510566.

It is an arithmetic number, because the mean of its divisors is an integer number (220510566).

Almost surely, 2^441021131 is an apocalyptic number.

441021131 is a deficient number, since it is larger than the sum of its proper divisors (1).

441021131 is an equidigital number, since it uses as much as digits as its factorization.

441021131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 441021131 is about 21000.5031130209. The cubic root of 441021131 is about 761.1784182807.

Adding to 441021131 its reverse (131120144), we get a palindrome (572141275).

The spelling of 441021131 in words is "four hundred forty-one million, twenty-one thousand, one hundred thirty-one".