3631139 has 2 divisors, whose sum is σ = 3631140. Its totient is φ = 3631138.

The previous prime is 3631073. The next prime is 3631141. The reversal of 3631139 is 9311363.

3631139 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3631139 - 2⁸ = 3630883 is a prime.

Together with 3631141, 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 (3631169) 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, 1815569 + 1815570.

It is an arithmetic number, because the mean of its divisors is an integer number (1815570).

Almost surely, 2^3631139 is an apocalyptic number.

3631139 is a deficient number, since it is larger than the sum of its proper divisors (1).

3631139 is an equidigital number, since it uses as much as digits as its factorization.

3631139 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1458, while the sum is 26.

The square root of 3631139 is about 1905.5547748622. The cubic root of 3631139 is about 153.7025094033.

The spelling of 3631139 in words is "three million, six hundred thirty-one thousand, one hundred thirty-nine".