231133936 has 40 divisors (see below), whose sum is σ = 514252800. Its totient is φ = 99529920.

The previous prime is 231133909. The next prime is 231133937. The reversal of 231133936 is 639331132.

It is a junction number, because it is equal to n+sod(n) for n = 231133898 and 231133907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231133937) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31216 + ... + 37903.

It is an arithmetic number, because the mean of its divisors is an integer number (12856320).

Almost surely, 2^231133936 is an apocalyptic number.

It is an amenable number.

231133936 is an abundant number, since it is smaller than the sum of its proper divisors (283118864).

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

231133936 is a wasteful number, since it uses less digits than its factorization.

231133936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69157 (or 69151 counting only the distinct ones).

The product of its digits is 8748, while the sum is 31.

The square root of 231133936 is about 15203.0896859816. The cubic root of 231133936 is about 613.6978074175.

The spelling of 231133936 in words is "two hundred thirty-one million, one hundred thirty-three thousand, nine hundred thirty-six".