2023631 has 4 divisors (see below), whose sum is σ = 2034000. Its totient is φ = 2013264.

The previous prime is 2023621. The next prime is 2023639. The reversal of 2023631 is 1363202.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2023631 is a prime.

It is a super-2 number, since 2×2023631² = 8190164848322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2023639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4886 + ... + 5283.

It is an arithmetic number, because the mean of its divisors is an integer number (508500).

2^2023631 is an apocalyptic number.

2023631 is a deficient number, since it is larger than the sum of its proper divisors (10369).

2023631 is a wasteful number, since it uses less digits than its factorization.

2023631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10368.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 2023631 is about 1422.5438481818. The cubic root of 2023631 is about 126.4863832615.

Adding to 2023631 its reverse (1363202), we get a palindrome (3386833).

The spelling of 2023631 in words is "two million, twenty-three thousand, six hundred thirty-one".