231121231210 has 16 divisors (see below), whose sum is σ = 416050670592. Its totient is φ = 92441280400.

The previous prime is 231121231207. The next prime is 231121231217. The reversal of 231121231210 is 12132121132.

It is not an unprimeable number, because it can be changed into a prime (231121231217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 765946 + ... + 1024165.

It is an arithmetic number, because the mean of its divisors is an integer number (26003166912).

Almost surely, 2^231121231210 is an apocalyptic number.

231121231210 is a deficient number, since it is larger than the sum of its proper divisors (184929439382).

231121231210 is a wasteful number, since it uses less digits than its factorization.

231121231210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1803029.

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

Adding to 231121231210 its reverse (12132121132), we get a palindrome (243253352342).

The spelling of 231121231210 in words is "two hundred thirty-one billion, one hundred twenty-one million, two hundred thirty-one thousand, two hundred ten".