231845136 has 20 divisors (see below), whose sum is σ = 598933392. Its totient is φ = 77281696.

The previous prime is 231845077. The next prime is 231845177. The reversal of 231845136 is 631548132.

It is a junction number, because it is equal to n+sod(n) for n = 231845097 and 231845106.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 2415006 + ... + 2415101.

Almost surely, 2^231845136 is an apocalyptic number.

It is an amenable number.

231845136 is an abundant number, since it is smaller than the sum of its proper divisors (367088256).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

231845136 is a wasteful number, since it uses less digits than its factorization.

231845136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4830118 (or 4830112 counting only the distinct ones).

The product of its digits is 17280, while the sum is 33.

The square root of 231845136 is about 15226.4617032323. The cubic root of 231845136 is about 614.3266130744.

The spelling of 231845136 in words is "two hundred thirty-one million, eight hundred forty-five thousand, one hundred thirty-six".