203240217029 has 2 divisors, whose sum is σ = 203240217030. Its totient is φ = 203240217028.

The previous prime is 203240216999. The next prime is 203240217149. The reversal of 203240217029 is 920712042302.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 155395216804 + 47845000225 = 394202^2 + 218735^2 .

It is a cyclic number.

It is not a de Polignac number, because 203240217029 - 2¹² = 203240212933 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 203240216986 and 203240217004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (203240217329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101620108514 + 101620108515.

It is an arithmetic number, because the mean of its divisors is an integer number (101620108515).

Almost surely, 2^203240217029 is an apocalyptic number.

It is an amenable number.

203240217029 is a deficient number, since it is larger than the sum of its proper divisors (1).

203240217029 is an equidigital number, since it uses as much as digits as its factorization.

203240217029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12096, while the sum is 32.

The spelling of 203240217029 in words is "two hundred three billion, two hundred forty million, two hundred seventeen thousand, twenty-nine".