136432231 has 4 divisors (see below), whose sum is σ = 146927032. Its totient is φ = 125937432.

The previous prime is 136432223. The next prime is 136432237. The reversal of 136432231 is 132234631.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 136432231 - 2³ = 136432223 is a prime.

It is a super-2 number, since 2×136432231² = 37227507311274722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 136432196 and 136432205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136432237) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5247381 + ... + 5247406.

It is an arithmetic number, because the mean of its divisors is an integer number (36731758).

Almost surely, 2^136432231 is an apocalyptic number.

136432231 is a deficient number, since it is larger than the sum of its proper divisors (10494801).

136432231 is a wasteful number, since it uses less digits than its factorization.

136432231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10494800.

The product of its digits is 2592, while the sum is 25.

The square root of 136432231 is about 11680.4208400211. The cubic root of 136432231 is about 514.8005398449.

Adding to 136432231 its reverse (132234631), we get a palindrome (268666862).

The spelling of 136432231 in words is "one hundred thirty-six million, four hundred thirty-two thousand, two hundred thirty-one".