41431681 has 2 divisors, whose sum is σ = 41431682. Its totient is φ = 41431680.

The previous prime is 41431679. The next prime is 41431693. The reversal of 41431681 is 18613414.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40449600 + 982081 = 6360^2 + 991^2 .

It is a cyclic number.

It is not a de Polignac number, because 41431681 - 2¹ = 41431679 is a prime.

It is a super-2 number, since 2×41431681² = 3433168380971522, which contains 22 as substring.

Together with 41431679, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (41431651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20715840 + 20715841.

It is an arithmetic number, because the mean of its divisors is an integer number (20715841).

Almost surely, 2^41431681 is an apocalyptic number.

It is an amenable number.

41431681 is a deficient number, since it is larger than the sum of its proper divisors (1).

41431681 is an equidigital number, since it uses as much as digits as its factorization.

41431681 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2304, while the sum is 28.

The square root of 41431681 is about 6436.7445964556. The cubic root of 41431681 is about 346.0276883185.

The spelling of 41431681 in words is "forty-one million, four hundred thirty-one thousand, six hundred eighty-one".