141631891 has 2 divisors, whose sum is σ = 141631892. Its totient is φ = 141631890.

The previous prime is 141631877. The next prime is 141631927. The reversal of 141631891 is 198136141.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 141631891 - 2⁵ = 141631859 is a prime.

It is not a weakly prime, because it can be changed into another prime (141631291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70815945 + 70815946.

It is an arithmetic number, because the mean of its divisors is an integer number (70815946).

Almost surely, 2^141631891 is an apocalyptic number.

141631891 is a deficient number, since it is larger than the sum of its proper divisors (1).

141631891 is an equidigital number, since it uses as much as digits as its factorization.

141631891 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5184, while the sum is 34.

The square root of 141631891 is about 11900.9197543719. The cubic root of 141631891 is about 521.2591416677.

The spelling of 141631891 in words is "one hundred forty-one million, six hundred thirty-one thousand, eight hundred ninety-one".