281020200137 has 2 divisors, whose sum is σ = 281020200138. Its totient is φ = 281020200136.

The previous prime is 281020200049. The next prime is 281020200151. The reversal of 281020200137 is 731002020182.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 243605422096 + 37414778041 = 493564^2 + 193429^2 .

It is a cyclic number.

It is not a de Polignac number, because 281020200137 - 2²⁸ = 280751764681 is a prime.

It is not a weakly prime, because it can be changed into another prime (281020200037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 140510100068 + 140510100069.

It is an arithmetic number, because the mean of its divisors is an integer number (140510100069).

Almost surely, 2^281020200137 is an apocalyptic number.

It is an amenable number.

281020200137 is a deficient number, since it is larger than the sum of its proper divisors (1).

281020200137 is an equidigital number, since it uses as much as digits as its factorization.

281020200137 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1344, while the sum is 26.

The spelling of 281020200137 in words is "two hundred eighty-one billion, twenty million, two hundred thousand, one hundred thirty-seven".