137303281 has 2 divisors, whose sum is σ = 137303282. Its totient is φ = 137303280.

The previous prime is 137303273. The next prime is 137303293. The reversal of 137303281 is 182303731.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 100821681 + 36481600 = 10041^2 + 6040^2 .

It is a cyclic number.

It is not a de Polignac number, because 137303281 - 2³ = 137303273 is a prime.

It is a super-2 number, since 2×137303281² = 37704381946729922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (137300281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68651640 + 68651641.

It is an arithmetic number, because the mean of its divisors is an integer number (68651641).

Almost surely, 2^137303281 is an apocalyptic number.

It is an amenable number.

137303281 is a deficient number, since it is larger than the sum of its proper divisors (1).

137303281 is an equidigital number, since it uses as much as digits as its factorization.

137303281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 137303281 is about 11717.6482708776. The cubic root of 137303281 is about 515.8937958717.

The spelling of 137303281 in words is "one hundred thirty-seven million, three hundred three thousand, two hundred eighty-one".