203420143302123 has 16 divisors (see below), whose sum is σ = 297153732560256. Its totient is φ = 122755815435840.

The previous prime is 203420143302067. The next prime is 203420143302137. The reversal of 203420143302123 is 321203341024302.

It is a happy number.

203420143302123 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 203420143302123 - 2⁹ = 203420143301611 is a prime.

It is not an unprimeable number, because it can be changed into a prime (203420143302023) 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, 13227989665 + ... + 13228005042.

It is an arithmetic number, because the mean of its divisors is an integer number (18572108285016).

Almost surely, 2^{203420143302123} is an apocalyptic number.

203420143302123 is a deficient number, since it is larger than the sum of its proper divisors (93733589258133).

203420143302123 is a wasteful number, since it uses less digits than its factorization.

203420143302123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26455994954.

The product of its (nonzero) digits is 20736, while the sum is 30.

Adding to 203420143302123 its reverse (321203341024302), we get a palindrome (524623484326425).

The spelling of 203420143302123 in words is "two hundred three trillion, four hundred twenty billion, one hundred forty-three million, three hundred two thousand, one hundred twenty-three".