203202020322157 has 2 divisors, whose sum is σ = 203202020322158. Its totient is φ = 203202020322156.

The previous prime is 203202020322151. The next prime is 203202020322187. The reversal of 203202020322157 is 751223020202302.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 188966234757001 + 14235785565156 = 13746499^2 + 3773034^2 .

It is a cyclic number.

It is not a de Polignac number, because 203202020322157 - 2³ = 203202020322149 is a prime.

It is a super-2 number, since 2×203202020322157² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (203202020322151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101601010161078 + 101601010161079.

It is an arithmetic number, because the mean of its divisors is an integer number (101601010161079).

Almost surely, 2^{203202020322157} is an apocalyptic number.

It is an amenable number.

203202020322157 is a deficient number, since it is larger than the sum of its proper divisors (1).

203202020322157 is an equidigital number, since it uses as much as digits as its factorization.

203202020322157 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20160, while the sum is 31.

Adding to 203202020322157 its reverse (751223020202302), we get a palindrome (954425040524459).

The spelling of 203202020322157 in words is "two hundred three trillion, two hundred two billion, twenty million, three hundred twenty-two thousand, one hundred fifty-seven".