203401310120101 has 4 divisors (see below), whose sum is σ = 203446702070604. Its totient is φ = 203355918169600.

The previous prime is 203401310120093. The next prime is 203401310120117. The reversal of 203401310120101 is 101021013104302.

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 171626375390625 + 31774934729476 = 13100625^2 + 5636926^2 .

It is a cyclic number.

It is not a de Polignac number, because 203401310120101 - 2³ = 203401310120093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203401310120501) 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, 22695968530 + ... + 22695977491.

It is an arithmetic number, because the mean of its divisors is an integer number (50861675517651).

Almost surely, 2^{203401310120101} is an apocalyptic number.

It is an amenable number.

203401310120101 is a deficient number, since it is larger than the sum of its proper divisors (45391950503).

203401310120101 is an equidigital number, since it uses as much as digits as its factorization.

203401310120101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45391950502.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 203401310120101 its reverse (101021013104302), we get a palindrome (304422323224403).

The spelling of 203401310120101 in words is "two hundred three trillion, four hundred one billion, three hundred ten million, one hundred twenty thousand, one hundred one".