231783836 has 12 divisors (see below), whose sum is σ = 416584728. Its totient is φ = 112759632.

The previous prime is 231783821. The next prime is 231783883. The reversal of 231783836 is 638387132.

It is a junction number, because it is equal to n+sod(n) for n = 231783793 and 231783802.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 782906 + ... + 783201.

It is an arithmetic number, because the mean of its divisors is an integer number (34715394).

Almost surely, 2^231783836 is an apocalyptic number.

It is an amenable number.

231783836 is a deficient number, since it is larger than the sum of its proper divisors (184800892).

231783836 is a wasteful number, since it uses less digits than its factorization.

231783836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1566148 (or 1566146 counting only the distinct ones).

The product of its digits is 145152, while the sum is 41.

The square root of 231783836 is about 15224.4486271260. The cubic root of 231783836 is about 614.2724655207.

The spelling of 231783836 in words is "two hundred thirty-one million, seven hundred eighty-three thousand, eight hundred thirty-six".