203201313989 has 2 divisors, whose sum is σ = 203201313990. Its totient is φ = 203201313988.

The previous prime is 203201313983. The next prime is 203201314009. The reversal of 203201313989 is 989313102302.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 162131049025 + 41070264964 = 402655^2 + 202658^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-203201313989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (203201313983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101600656994 + 101600656995.

It is an arithmetic number, because the mean of its divisors is an integer number (101600656995).

Almost surely, 2^203201313989 is an apocalyptic number.

It is an amenable number.

203201313989 is a deficient number, since it is larger than the sum of its proper divisors (1).

203201313989 is an equidigital number, since it uses as much as digits as its factorization.

203201313989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 69984, while the sum is 41.

It can be divided in two parts, 203201313 and 989, that added together give a palindrome (203202302).

The spelling of 203201313989 in words is "two hundred three billion, two hundred one million, three hundred thirteen thousand, nine hundred eighty-nine".