136304231 has 12 divisors (see below), whose sum is σ = 159517008. Its totient is φ = 116125632.

The previous prime is 136304209. The next prime is 136304237. The reversal of 136304231 is 132403631.

It is not a de Polignac number, because 136304231 - 2¹⁸ = 136042087 is a prime.

It is a super-2 number, since 2×136304231² = 37157686777002722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 136304197 and 136304206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136304237) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 146 + ... + 16511.

It is an arithmetic number, because the mean of its divisors is an integer number (13293084).

Almost surely, 2^136304231 is an apocalyptic number.

136304231 is a deficient number, since it is larger than the sum of its proper divisors (23212777).

136304231 is a wasteful number, since it uses less digits than its factorization.

136304231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16838 (or 16831 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 23.

The square root of 136304231 is about 11674.9402996332. The cubic root of 136304231 is about 514.6394950863.

Adding to 136304231 its reverse (132403631), we get a palindrome (268707862).

The spelling of 136304231 in words is "one hundred thirty-six million, three hundred four thousand, two hundred thirty-one".