203811643223 has 2 divisors, whose sum is σ = 203811643224. Its totient is φ = 203811643222.

The previous prime is 203811643171. The next prime is 203811643237. The reversal of 203811643223 is 322346118302.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 203811643223 - 2¹² = 203811639127 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (203811643523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101905821611 + 101905821612.

It is an arithmetic number, because the mean of its divisors is an integer number (101905821612).

Almost surely, 2^203811643223 is an apocalyptic number.

203811643223 is a deficient number, since it is larger than the sum of its proper divisors (1).

203811643223 is an equidigital number, since it uses as much as digits as its factorization.

203811643223 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 41472, while the sum is 35.

The spelling of 203811643223 in words is "two hundred three billion, eight hundred eleven million, six hundred forty-three thousand, two hundred twenty-three".