203000344000387 has 2 divisors, whose sum is σ = 203000344000388. Its totient is φ = 203000344000386.

The previous prime is 203000344000313. The next prime is 203000344000423. The reversal of 203000344000387 is 783000443000302.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-203000344000387 is a prime.

It is a super-2 number, since 2×203000344000387² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (203000344000787) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101500172000193 + 101500172000194.

It is an arithmetic number, because the mean of its divisors is an integer number (101500172000194).

Almost surely, 2^{203000344000387} is an apocalyptic number.

203000344000387 is a deficient number, since it is larger than the sum of its proper divisors (1).

203000344000387 is an equidigital number, since it uses as much as digits as its factorization.

203000344000387 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48384, while the sum is 34.

Adding to 203000344000387 its reverse (783000443000302), we get a palindrome (986000787000689).

The spelling of 203000344000387 in words is "two hundred three trillion, three hundred forty-four million, three hundred eighty-seven", and thus it is an aban number.