231100310121 has 16 divisors (see below), whose sum is σ = 309072259584. Its totient is φ = 153597919104.

The previous prime is 231100310107. The next prime is 231100310153. The reversal of 231100310121 is 121013001132.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-231100310121 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 231100310121.

It is not an unprimeable number, because it can be changed into a prime (231100310821) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3160840 + ... + 3233126.

It is an arithmetic number, because the mean of its divisors is an integer number (19317016224).

Almost surely, 2^231100310121 is an apocalyptic number.

It is an amenable number.

231100310121 is a deficient number, since it is larger than the sum of its proper divisors (77971949463).

231100310121 is a wasteful number, since it uses less digits than its factorization.

231100310121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75520.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 231100310121 its reverse (121013001132), we get a palindrome (352113311253).

The spelling of 231100310121 in words is "two hundred thirty-one billion, one hundred million, three hundred ten thousand, one hundred twenty-one".