623421532103 has 2 divisors, whose sum is σ = 623421532104. Its totient is φ = 623421532102.

The previous prime is 623421532087. The next prime is 623421532109. The reversal of 623421532103 is 301235124326.

623421532103 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 623421532103 - 2⁴ = 623421532087 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 623421532103.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (623421532109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 311710766051 + 311710766052.

It is an arithmetic number, because the mean of its divisors is an integer number (311710766052).

Almost surely, 2^623421532103 is an apocalyptic number.

623421532103 is a deficient number, since it is larger than the sum of its proper divisors (1).

623421532103 is an equidigital number, since it uses as much as digits as its factorization.

623421532103 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25920, while the sum is 32.

Adding to 623421532103 its reverse (301235124326), we get a palindrome (924656656429).

The spelling of 623421532103 in words is "six hundred twenty-three billion, four hundred twenty-one million, five hundred thirty-two thousand, one hundred three".