2056631 has 2 divisors, whose sum is σ = 2056632. Its totient is φ = 2056630.

The previous prime is 2056627. The next prime is 2056661. The reversal of 2056631 is 1366502.

2056631 is nontrivially palindromic in base 8.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2056631 - 2² = 2056627 is a prime.

It is a super-2 number, since 2×2056631² = 8459462140322, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 2056597 and 2056606.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2056661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1028315 + 1028316.

It is an arithmetic number, because the mean of its divisors is an integer number (1028316).

2^2056631 is an apocalyptic number.

2056631 is a deficient number, since it is larger than the sum of its proper divisors (1).

2056631 is an equidigital number, since it uses as much as digits as its factorization.

2056631 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 2056631 is about 1434.0958824291. The cubic root of 2056631 is about 127.1702307285.

The spelling of 2056631 in words is "two million, fifty-six thousand, six hundred thirty-one".