203111342301 has 16 divisors (see below), whose sum is σ = 313862197248. Its totient is φ = 114428924400.

The previous prime is 203111342263. The next prime is 203111342309. The reversal of 203111342301 is 103243111302.

It is not a de Polignac number, because 203111342301 - 2²³ = 203102953693 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203111342309) 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, 68110965 + ... + 68113946.

It is an arithmetic number, because the mean of its divisors is an integer number (19616387328).

Almost surely, 2^203111342301 is an apocalyptic number.

203111342301 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

203111342301 is a deficient number, since it is larger than the sum of its proper divisors (110750854947).

203111342301 is a wasteful number, since it uses less digits than its factorization.

203111342301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136224992.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 203111342301 its reverse (103243111302), we get a palindrome (306354453603).

The spelling of 203111342301 in words is "two hundred three billion, one hundred eleven million, three hundred forty-two thousand, three hundred one".