100243123403 has 2 divisors, whose sum is σ = 100243123404. Its totient is φ = 100243123402.

The previous prime is 100243123373. The next prime is 100243123417. The reversal of 100243123403 is 304321342001.

It is a strong prime.

It is an emirp because it is prime and its reverse (304321342001) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 100243123403 - 2¹⁸ = 100242861259 is a prime.

It is not a weakly prime, because it can be changed into another prime (100243123483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50121561701 + 50121561702.

It is an arithmetic number, because the mean of its divisors is an integer number (50121561702).

Almost surely, 2^100243123403 is an apocalyptic number.

100243123403 is a deficient number, since it is larger than the sum of its proper divisors (1).

100243123403 is an equidigital number, since it uses as much as digits as its factorization.

100243123403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 100243123403 its reverse (304321342001), we get a palindrome (404564465404).

The spelling of 100243123403 in words is "one hundred billion, two hundred forty-three million, one hundred twenty-three thousand, four hundred three".