10561631 has 4 divisors (see below), whose sum is σ = 10569000. Its totient is φ = 10554264.

The previous prime is 10561609. The next prime is 10561633. The reversal of 10561631 is 13616501.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 13616501 = 677 ⋅20113.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10561631 is a prime.

It is a super-2 number, since 2×10561631² = 223096098760322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10561597 and 10561606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10561633) 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 in 3 ways as a sum of consecutive naturals, for example, 761 + ... + 4658.

It is an arithmetic number, because the mean of its divisors is an integer number (2642250).

Almost surely, 2^10561631 is an apocalyptic number.

10561631 is a deficient number, since it is larger than the sum of its proper divisors (7369).

10561631 is an equidigital number, since it uses as much as digits as its factorization.

10561631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7368.

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 10561631 is about 3249.8663049424. The cubic root of 10561631 is about 219.4035566162.

The spelling of 10561631 in words is "ten million, five hundred sixty-one thousand, six hundred thirty-one".