231211312102 has 8 divisors (see below), whose sum is σ = 351993341016. Its totient is φ = 113880198432.

The previous prime is 231211312091. The next prime is 231211312109. The reversal of 231211312102 is 201213112132.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 231211312102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231211312109) 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, 862728643 + ... + 862728910.

It is an arithmetic number, because the mean of its divisors is an integer number (43999167627).

Almost surely, 2^231211312102 is an apocalyptic number.

231211312102 is a deficient number, since it is larger than the sum of its proper divisors (120782028914).

231211312102 is a wasteful number, since it uses less digits than its factorization.

231211312102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1725457622.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 231211312102 its reverse (201213112132), we get a palindrome (432424424234).

The spelling of 231211312102 in words is "two hundred thirty-one billion, two hundred eleven million, three hundred twelve thousand, one hundred two".