203113100231 has 2 divisors, whose sum is σ = 203113100232. Its totient is φ = 203113100230.

The previous prime is 203113100189. The next prime is 203113100237. The reversal of 203113100231 is 132001311302.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 203113100231 - 2¹⁰ = 203113099207 is a prime.

It is a super-2 number, since 2×203113100231² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (203113100237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101556550115 + 101556550116.

It is an arithmetic number, because the mean of its divisors is an integer number (101556550116).

Almost surely, 2^203113100231 is an apocalyptic number.

203113100231 is a deficient number, since it is larger than the sum of its proper divisors (1).

203113100231 is an equidigital number, since it uses as much as digits as its factorization.

203113100231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 203113100231 its reverse (132001311302), we get a palindrome (335114411533).

The spelling of 203113100231 in words is "two hundred three billion, one hundred thirteen million, one hundred thousand, two hundred thirty-one".