203112553252997 has 2 divisors, whose sum is σ = 203112553252998. Its totient is φ = 203112553252996.

The previous prime is 203112553252963. The next prime is 203112553253161. The reversal of 203112553252997 is 799252355211302.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 112355569243681 + 90756984009316 = 10599791^2 + 9526646^2 .

It is a cyclic number.

It is not a de Polignac number, because 203112553252997 - 2¹² = 203112553248901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (203112553252097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101556276626498 + 101556276626499.

It is an arithmetic number, because the mean of its divisors is an integer number (101556276626499).

Almost surely, 2^{203112553252997} is an apocalyptic number.

It is an amenable number.

203112553252997 is a deficient number, since it is larger than the sum of its proper divisors (1).

203112553252997 is an equidigital number, since it uses as much as digits as its factorization.

203112553252997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10206000, while the sum is 56.

The spelling of 203112553252997 in words is "two hundred three trillion, one hundred twelve billion, five hundred fifty-three million, two hundred fifty-two thousand, nine hundred ninety-seven".