203013121312249 has 2 divisors, whose sum is σ = 203013121312250. Its totient is φ = 203013121312248.

The previous prime is 203013121312153. The next prime is 203013121312259. The reversal of 203013121312249 is 942213121310302.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 115539001694649 + 87474119617600 = 10748907^2 + 9352760^2 .

It is a cyclic number.

It is not a de Polignac number, because 203013121312249 - 2²⁷ = 203012987094521 is a prime.

It is not a weakly prime, because it can be changed into another prime (203013121312259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101506560656124 + 101506560656125.

It is an arithmetic number, because the mean of its divisors is an integer number (101506560656125).

Almost surely, 2^{203013121312249} is an apocalyptic number.

It is an amenable number.

203013121312249 is a deficient number, since it is larger than the sum of its proper divisors (1).

203013121312249 is an equidigital number, since it uses as much as digits as its factorization.

203013121312249 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 34.

The spelling of 203013121312249 in words is "two hundred three trillion, thirteen billion, one hundred twenty-one million, three hundred twelve thousand, two hundred forty-nine".