203100135404401 has 4 divisors (see below), whose sum is σ = 203101723778292. Its totient is φ = 203098547030512.

The previous prime is 203100135404377. The next prime is 203100135404407. The reversal of 203100135404401 is 104404531001302.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 32752740446001 + 170347394958400 = 5723001^2 + 13051720^2 .

It is a cyclic number.

It is not a de Polignac number, because 203100135404401 - 2²⁵ = 203100101849969 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 203100135404401.

It is not an unprimeable number, because it can be changed into a prime (203100135404407) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 793995130 + ... + 794250883.

It is an arithmetic number, because the mean of its divisors is an integer number (50775430944573).

Almost surely, 2^{203100135404401} is an apocalyptic number.

It is an amenable number.

203100135404401 is a deficient number, since it is larger than the sum of its proper divisors (1588373891).

203100135404401 is a wasteful number, since it uses less digits than its factorization.

203100135404401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1588373890.

The product of its (nonzero) digits is 5760, while the sum is 28.

Adding to 203100135404401 its reverse (104404531001302), we get a palindrome (307504666405703).

The spelling of 203100135404401 in words is "two hundred three trillion, one hundred billion, one hundred thirty-five million, four hundred four thousand, four hundred one".