623404343243 has 16 divisors (see below), whose sum is σ = 681616615680. Its totient is φ = 565449621600.

The previous prime is 623404343207. The next prime is 623404343293. The reversal of 623404343243 is 342343404326.

It is a cyclic number.

It is not a de Polignac number, because 623404343243 - 2¹⁸ = 623404081099 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 623404343197 and 623404343206.

It is not an unprimeable number, because it can be changed into a prime (623404343293) 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, 12782621 + ... + 12831297.

It is an arithmetic number, because the mean of its divisors is an integer number (42601038480).

Almost surely, 2^623404343243 is an apocalyptic number.

623404343243 is a deficient number, since it is larger than the sum of its proper divisors (58212272437).

623404343243 is a wasteful number, since it uses less digits than its factorization.

623404343243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51298.

The product of its (nonzero) digits is 497664, while the sum is 38.

Adding to 623404343243 its reverse (342343404326), we get a palindrome (965747747569).

The spelling of 623404343243 in words is "six hundred twenty-three billion, four hundred four million, three hundred forty-three thousand, two hundred forty-three".