203231111201 has 2 divisors, whose sum is σ = 203231111202. Its totient is φ = 203231111200.

The previous prime is 203231111191. The next prime is 203231111203. The reversal of 203231111201 is 102111132302.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 171852531601 + 31378579600 = 414551^2 + 177140^2 .

It is a cyclic number.

It is not a de Polignac number, because 203231111201 - 2³⁴ = 186051242017 is a prime.

It is a Sophie Germain prime.

Together with 203231111203, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 203231111201.

It is not a weakly prime, because it can be changed into another prime (203231111203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101615555600 + 101615555601.

It is an arithmetic number, because the mean of its divisors is an integer number (101615555601).

Almost surely, 2^203231111201 is an apocalyptic number.

It is an amenable number.

203231111201 is a deficient number, since it is larger than the sum of its proper divisors (1).

203231111201 is an equidigital number, since it uses as much as digits as its factorization.

203231111201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 203231111201 its reverse (102111132302), we get a palindrome (305342243503).

It can be divided in two parts, 203231 and 111201, that added together give a cube (314432 = 68³).

The spelling of 203231111201 in words is "two hundred three billion, two hundred thirty-one million, one hundred eleven thousand, two hundred one".