623343631 has 16 divisors (see below), whose sum is σ = 660215808. Its totient is φ = 587347200.

The previous prime is 623343593. The next prime is 623343647. The reversal of 623343631 is 136343326.

It is a happy number.

623343631 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 623343631 - 2¹⁹ = 622819343 is a prime.

It is a super-2 number, since 2×623343631² = 777114564616528322, 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 = 623343593 and 623343602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (623343731) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 604086 + ... + 605116.

It is an arithmetic number, because the mean of its divisors is an integer number (41263488).

Almost surely, 2^623343631 is an apocalyptic number.

623343631 is a deficient number, since it is larger than the sum of its proper divisors (36872177).

623343631 is a wasteful number, since it uses less digits than its factorization.

623343631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1422.

The product of its digits is 23328, while the sum is 31.

The square root of 623343631 is about 24966.8506424018. The cubic root of 623343631 is about 854.2320114906.

Adding to 623343631 its reverse (136343326), we get a palindrome (759686957).

The spelling of 623343631 in words is "six hundred twenty-three million, three hundred forty-three thousand, six hundred thirty-one".