203213072693 has 2 divisors, whose sum is σ = 203213072694. Its totient is φ = 203213072692.

The previous prime is 203213072683. The next prime is 203213072719. The reversal of 203213072693 is 396270312302.

203213072693 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 177900899089 + 25312173604 = 421783^2 + 159098^2 .

It is a cyclic number.

It is not a de Polignac number, because 203213072693 - 2²⁸ = 202944637237 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (203213072603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101606536346 + 101606536347.

It is an arithmetic number, because the mean of its divisors is an integer number (101606536347).

Almost surely, 2^203213072693 is an apocalyptic number.

It is an amenable number.

203213072693 is a deficient number, since it is larger than the sum of its proper divisors (1).

203213072693 is an equidigital number, since it uses as much as digits as its factorization.

203213072693 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 81648, while the sum is 38.

Adding to 203213072693 its reverse (396270312302), we get a palindrome (599483384995).

The spelling of 203213072693 in words is "two hundred three billion, two hundred thirteen million, seventy-two thousand, six hundred ninety-three".