231243102 has 48 divisors (see below), whose sum is σ = 515241792. Its totient is φ = 74917440.

The previous prime is 231243097. The next prime is 231243109. The reversal of 231243102 is 201342132.

231243102 is a `hidden beast` number, since 231 + 2 + 431 + 0 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231243109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 131952 + ... + 133692.

It is an arithmetic number, because the mean of its divisors is an integer number (10734204).

Almost surely, 2^231243102 is an apocalyptic number.

231243102 is an abundant number, since it is smaller than the sum of its proper divisors (283998690).

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

231243102 is a wasteful number, since it uses less digits than its factorization.

231243102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1953 (or 1950 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 231243102 is about 15206.6795192113. The cubic root of 231243102 is about 613.7944099782.

Adding to 231243102 its reverse (201342132), we get a palindrome (432585234).

The spelling of 231243102 in words is "two hundred thirty-one million, two hundred forty-three thousand, one hundred two".