20624431103 has 2 divisors, whose sum is σ = 20624431104. Its totient is φ = 20624431102.

The previous prime is 20624431081. The next prime is 20624431117. The reversal of 20624431103 is 30113442602.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20624431103 - 2⁸ = 20624430847 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20624431123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10312215551 + 10312215552.

It is an arithmetic number, because the mean of its divisors is an integer number (10312215552).

Almost surely, 2^20624431103 is an apocalyptic number.

20624431103 is a deficient number, since it is larger than the sum of its proper divisors (1).

20624431103 is an equidigital number, since it uses as much as digits as its factorization.

20624431103 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 20624431103 its reverse (30113442602), we get a palindrome (50737873705).

The spelling of 20624431103 in words is "twenty billion, six hundred twenty-four million, four hundred thirty-one thousand, one hundred three".