231245012 has 12 divisors (see below), whose sum is σ = 410378976. Its totient is φ = 113993880.

The previous prime is 231245009. The next prime is 231245017. The reversal of 231245012 is 210542132.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231245017) 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, 406838 + ... + 407405.

It is an arithmetic number, because the mean of its divisors is an integer number (34198248).

Almost surely, 2^231245012 is an apocalyptic number.

It is an amenable number.

231245012 is a deficient number, since it is larger than the sum of its proper divisors (179133964).

231245012 is a wasteful number, since it uses less digits than its factorization.

231245012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 814318 (or 814316 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 231245012 is about 15206.7423204314. The cubic root of 231245012 is about 613.7960998940.

Adding to 231245012 its reverse (210542132), we get a palindrome (441787144).

The spelling of 231245012 in words is "two hundred thirty-one million, two hundred forty-five thousand, twelve".