203011330997 has 2 divisors, whose sum is σ = 203011330998. Its totient is φ = 203011330996.

The previous prime is 203011330969. The next prime is 203011331009. The reversal of 203011330997 is 799033110302.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 169551238756 + 33460092241 = 411766^2 + 182921^2 .

It is a cyclic number.

It is not a de Polignac number, because 203011330997 - 2²⁰ = 203010282421 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 203011330997.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (203011330937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101505665498 + 101505665499.

It is an arithmetic number, because the mean of its divisors is an integer number (101505665499).

Almost surely, 2^203011330997 is an apocalyptic number.

It is an amenable number.

203011330997 is a deficient number, since it is larger than the sum of its proper divisors (1).

203011330997 is an equidigital number, since it uses as much as digits as its factorization.

203011330997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30618, while the sum is 38.

The spelling of 203011330997 in words is "two hundred three billion, eleven million, three hundred thirty thousand, nine hundred ninety-seven".