203324400101243 has 2 divisors, whose sum is σ = 203324400101244. Its totient is φ = 203324400101242.

The previous prime is 203324400101219. The next prime is 203324400101257. The reversal of 203324400101243 is 342101004423302.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 203324400101243 - 2¹⁶ = 203324400035707 is a prime.

It is not a weakly prime, because it can be changed into another prime (203324400101213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101662200050621 + 101662200050622.

It is an arithmetic number, because the mean of its divisors is an integer number (101662200050622).

Almost surely, 2^{203324400101243} is an apocalyptic number.

203324400101243 is a deficient number, since it is larger than the sum of its proper divisors (1).

203324400101243 is an equidigital number, since it uses as much as digits as its factorization.

203324400101243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13824, while the sum is 29.

Adding to 203324400101243 its reverse (342101004423302), we get a palindrome (545425404524545).

The spelling of 203324400101243 in words is "two hundred three trillion, three hundred twenty-four billion, four hundred million, one hundred one thousand, two hundred forty-three".