231205102 has 4 divisors (see below), whose sum is σ = 346807656. Its totient is φ = 115602550.

The previous prime is 231205097. The next prime is 231205103. The reversal of 231205102 is 201502132.

231205102 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231205103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57801274 + ... + 57801277.

It is an arithmetic number, because the mean of its divisors is an integer number (86701914).

Almost surely, 2^231205102 is an apocalyptic number.

231205102 is a deficient number, since it is larger than the sum of its proper divisors (115602554).

231205102 is a wasteful number, since it uses less digits than its factorization.

231205102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115602553.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 231205102 is about 15205.4300169380. The cubic root of 231205102 is about 613.7607866829.

Adding to 231205102 its reverse (201502132), we get a palindrome (432707234).

The spelling of 231205102 in words is "two hundred thirty-one million, two hundred five thousand, one hundred two".