41631391 has 2 divisors, whose sum is σ = 41631392. Its totient is φ = 41631390.

The previous prime is 41631377. The next prime is 41631409. The reversal of 41631391 is 19313614.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 41631391 - 2⁹ = 41630879 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (41631301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20815695 + 20815696.

It is an arithmetic number, because the mean of its divisors is an integer number (20815696).

Almost surely, 2^41631391 is an apocalyptic number.

41631391 is a deficient number, since it is larger than the sum of its proper divisors (1).

41631391 is an equidigital number, since it uses as much as digits as its factorization.

41631391 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1944, while the sum is 28.

The square root of 41631391 is about 6452.2392237114. The cubic root of 41631391 is about 346.5827744280.

The spelling of 41631391 in words is "forty-one million, six hundred thirty-one thousand, three hundred ninety-one".