231244072 has 16 divisors (see below), whose sum is σ = 438455700. Its totient is φ = 114322560.

The previous prime is 231244063. The next prime is 231244073. The reversal of 231244072 is 270442132.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 209844196 + 21399876 = 14486^2 + 4626^2 .

It is not an unprimeable number, because it can be changed into a prime (231244073) 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, 161679 + ... + 163102.

Almost surely, 2^231244072 is an apocalyptic number.

It is an amenable number.

231244072 is a deficient number, since it is larger than the sum of its proper divisors (207211628).

231244072 is a wasteful number, since it uses less digits than its factorization.

231244072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324876 (or 324872 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 25.

The square root of 231244072 is about 15206.7114130571. The cubic root of 231244072 is about 613.7952682088.

The spelling of 231244072 in words is "two hundred thirty-one million, two hundred forty-four thousand, seventy-two".