231072836 has 12 divisors (see below), whose sum is σ = 408921660. Its totient is φ = 114238080.

The previous prime is 231072833. The next prime is 231072839. The reversal of 231072836 is 638270132.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (231072833) and next prime (231072839).

It can be written as a sum of positive squares in 2 ways, for example, as 14394436 + 216678400 = 3794^2 + 14720^2 .

It is not an unprimeable number, because it can be changed into a prime (231072833) by changing a digit.

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, 324185 + ... + 324896.

It is an arithmetic number, because the mean of its divisors is an integer number (34076805).

Almost surely, 2^231072836 is an apocalyptic number.

It is an amenable number.

231072836 is a deficient number, since it is larger than the sum of its proper divisors (177848824).

231072836 is a wasteful number, since it uses less digits than its factorization.

231072836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 649174 (or 649172 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 231072836 is about 15201.0800932039. The cubic root of 231072836 is about 613.6437258732.

The spelling of 231072836 in words is "two hundred thirty-one million, seventy-two thousand, eight hundred thirty-six".