203000200330981 has 2 divisors, whose sum is σ = 203000200330982. Its totient is φ = 203000200330980.

The previous prime is 203000200330973. The next prime is 203000200331003. The reversal of 203000200330981 is 189033002000302.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 199155346042081 + 3844854288900 = 14112241^2 + 1960830^2 .

It is a cyclic number.

It is not a de Polignac number, because 203000200330981 - 2³ = 203000200330973 is a prime.

It is a super-2 number, since 2×203000200330981² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (203000200360981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101500100165490 + 101500100165491.

It is an arithmetic number, because the mean of its divisors is an integer number (101500100165491).

Almost surely, 2^{203000200330981} is an apocalyptic number.

It is an amenable number.

203000200330981 is a deficient number, since it is larger than the sum of its proper divisors (1).

203000200330981 is an equidigital number, since it uses as much as digits as its factorization.

203000200330981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 31.

The spelling of 203000200330981 in words is "two hundred three trillion, two hundred million, three hundred thirty thousand, nine hundred eighty-one".