203122329997 has 2 divisors, whose sum is σ = 203122329998. Its totient is φ = 203122329996.

The previous prime is 203122329979. The next prime is 203122330039. The reversal of 203122329997 is 799923221302.

Together with previous prime (203122329979) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 202757481796 + 364848201 = 450286^2 + 19101^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-203122329997 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 203122329997.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (203122329097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101561164998 + 101561164999.

It is an arithmetic number, because the mean of its divisors is an integer number (101561164999).

Almost surely, 2^203122329997 is an apocalyptic number.

It is an amenable number.

203122329997 is a deficient number, since it is larger than the sum of its proper divisors (1).

203122329997 is an equidigital number, since it uses as much as digits as its factorization.

203122329997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 734832, while the sum is 49.

The spelling of 203122329997 in words is "two hundred three billion, one hundred twenty-two million, three hundred twenty-nine thousand, nine hundred ninety-seven".