231212102310031 has 16 divisors (see below), whose sum is σ = 245844895887360. Its totient is φ = 217069867778400.

The previous prime is 231212102310019. The next prime is 231212102310073. The reversal of 231212102310031 is 130013201212132.

It is a cyclic number.

It is not a de Polignac number, because 231212102310031 - 2⁹ = 231212102309519 is a prime.

It is a super-2 number, since 2×231212102310031² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 231212102309984 and 231212102310011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231212102314031) 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, 415449895 + ... + 416006056.

It is an arithmetic number, because the mean of its divisors is an integer number (15365305992960).

Almost surely, 2^{231212102310031} is an apocalyptic number.

231212102310031 is a deficient number, since it is larger than the sum of its proper divisors (14632793577329).

231212102310031 is a wasteful number, since it uses less digits than its factorization.

231212102310031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 831456246.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 231212102310031 its reverse (130013201212132), we get a palindrome (361225303522163).

The spelling of 231212102310031 in words is "two hundred thirty-one trillion, two hundred twelve billion, one hundred two million, three hundred ten thousand, thirty-one".