231211102 has 8 divisors (see below), whose sum is σ = 347063976. Its totient is φ = 115523112.

The previous prime is 231211091. The next prime is 231211103. The reversal of 231211102 is 201112132.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231211103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37653 + ... + 43360.

It is an arithmetic number, because the mean of its divisors is an integer number (43382997).

Almost surely, 2^231211102 is an apocalyptic number.

231211102 is a deficient number, since it is larger than the sum of its proper divisors (115852874).

231211102 is a wasteful number, since it uses less digits than its factorization.

231211102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82442.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 231211102 is about 15205.6273135968. The cubic root of 231211102 is about 613.7660958692.

Adding to 231211102 its reverse (201112132), we get a palindrome (432323234).

The spelling of 231211102 in words is "two hundred thirty-one million, two hundred eleven thousand, one hundred two".