203011013310101 has 4 divisors (see below), whose sum is σ = 203479860916332. Its totient is φ = 202542165703872.

The previous prime is 203011013310067. The next prime is 203011013310113. The reversal of 203011013310101 is 101013310110302.

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 37460948686225 + 165550064623876 = 6120535^2 + 12866626^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-203011013310101 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 203011013310101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203011013310401) 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, 234423802466 + ... + 234423803331.

It is an arithmetic number, because the mean of its divisors is an integer number (50869965229083).

Almost surely, 2^{203011013310101} is an apocalyptic number.

It is an amenable number.

203011013310101 is a deficient number, since it is larger than the sum of its proper divisors (468847606231).

203011013310101 is an equidigital number, since it uses as much as digits as its factorization.

203011013310101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 468847606230.

The product of its (nonzero) digits is 54, while the sum is 17.

Adding to 203011013310101 its reverse (101013310110302), we get a palindrome (304024323420403).

The spelling of 203011013310101 in words is "two hundred three trillion, eleven billion, thirteen million, three hundred ten thousand, one hundred one".