203030322997 has 2 divisors, whose sum is σ = 203030322998. Its totient is φ = 203030322996.

The previous prime is 203030322959. The next prime is 203030323003. The reversal of 203030322997 is 799223030302.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 192312069156 + 10718253841 = 438534^2 + 103529^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-203030322997 is a prime.

It is a super-2 number, since 2×203030322997² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (203030322697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101515161498 + 101515161499.

It is an arithmetic number, because the mean of its divisors is an integer number (101515161499).

Almost surely, 2^203030322997 is an apocalyptic number.

It is an amenable number.

203030322997 is a deficient number, since it is larger than the sum of its proper divisors (1).

203030322997 is an equidigital number, since it uses as much as digits as its factorization.

203030322997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 122472, while the sum is 40.

The spelling of 203030322997 in words is "two hundred three billion, thirty million, three hundred twenty-two thousand, nine hundred ninety-seven".