2140631 has 2 divisors, whose sum is σ = 2140632. Its totient is φ = 2140630.

The previous prime is 2140627. The next prime is 2140637. The reversal of 2140631 is 1360412.

2140631 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2140631 - 2² = 2140627 is a prime.

It is a super-2 number, since 2×2140631² = 9164602156322, which contains 22 as substring.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2140637) 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, 1070315 + 1070316.

It is an arithmetic number, because the mean of its divisors is an integer number (1070316).

2^2140631 is an apocalyptic number.

2140631 is a deficient number, since it is larger than the sum of its proper divisors (1).

2140631 is an equidigital number, since it uses as much as digits as its factorization.

2140631 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 2140631 is about 1463.0895392969. The cubic root of 2140631 is about 128.8785387987.

The spelling of 2140631 in words is "two million, one hundred forty thousand, six hundred thirty-one".