203745237184213 has 2 divisors, whose sum is σ = 203745237184214. Its totient is φ = 203745237184212.

The previous prime is 203745237184199. The next prime is 203745237184271. The reversal of 203745237184213 is 312481732547302.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 104351475576049 + 99393761608164 = 10215257^2 + 9969642^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-203745237184213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (203745237184283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101872618592106 + 101872618592107.

It is an arithmetic number, because the mean of its divisors is an integer number (101872618592107).

Almost surely, 2^{203745237184213} is an apocalyptic number.

It is an amenable number.

203745237184213 is a deficient number, since it is larger than the sum of its proper divisors (1).

203745237184213 is an equidigital number, since it uses as much as digits as its factorization.

203745237184213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6773760, while the sum is 52.

The spelling of 203745237184213 in words is "two hundred three trillion, seven hundred forty-five billion, two hundred thirty-seven million, one hundred eighty-four thousand, two hundred thirteen".