136630281 has 16 divisors (see below), whose sum is σ = 196652160. Its totient is φ = 84120960.

The previous prime is 136630279. The next prime is 136630289. The reversal of 136630281 is 182036631.

It is not a de Polignac number, because 136630281 - 2¹ = 136630279 is a prime.

It is a super-2 number, since 2×136630281² = 37335667372277922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (136630289) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32140 + ... + 36141.

It is an arithmetic number, because the mean of its divisors is an integer number (12290760).

Almost surely, 2^136630281 is an apocalyptic number.

It is an amenable number.

136630281 is a deficient number, since it is larger than the sum of its proper divisors (60021879).

136630281 is a wasteful number, since it uses less digits than its factorization.

136630281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68336.

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 136630281 is about 11688.8956279026. The cubic root of 136630281 is about 515.0495204840.

The spelling of 136630281 in words is "one hundred thirty-six million, six hundred thirty thousand, two hundred eighty-one".