231102012 has 48 divisors (see below), whose sum is σ = 575195040. Its totient is φ = 71964672.

The previous prime is 231101989. The next prime is 231102017. The reversal of 231102012 is 210201132.

231102012 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231102017) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23814 + ... + 32082.

It is an arithmetic number, because the mean of its divisors is an integer number (11983230).

Almost surely, 2^231102012 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 231102012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (287597520).

231102012 is an abundant number, since it is smaller than the sum of its proper divisors (344093028).

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

231102012 is a wasteful number, since it uses less digits than its factorization.

231102012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8430 (or 8428 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 231102012 is about 15202.0397315623. The cubic root of 231102012 is about 613.6695516636.

Adding to 231102012 its reverse (210201132), we get a palindrome (441303144).

The spelling of 231102012 in words is "two hundred thirty-one million, one hundred two thousand, twelve".