2031232312121 has 16 divisors (see below), whose sum is σ = 2085443635968. Its totient is φ = 1977347500800.

The previous prime is 2031232312093. The next prime is 2031232312133. The reversal of 2031232312121 is 1212132321302.

It is not a de Polignac number, because 2031232312121 - 2²⁶ = 2031165203257 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2031235312121) 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 15 ways as a sum of consecutive naturals, for example, 18050651 + ... + 18162831.

It is an arithmetic number, because the mean of its divisors is an integer number (130340227248).

Almost surely, 2^{2031232312121} is an apocalyptic number.

It is an amenable number.

2031232312121 is a deficient number, since it is larger than the sum of its proper divisors (54211323847).

2031232312121 is a wasteful number, since it uses less digits than its factorization.

2031232312121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113632.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 2031232312121 its reverse (1212132321302), we get a palindrome (3243364633423).

The spelling of 2031232312121 in words is "two trillion, thirty-one billion, two hundred thirty-two million, three hundred twelve thousand, one hundred twenty-one".