2112331213031 has 4 divisors (see below), whose sum is σ = 2274818229432. Its totient is φ = 1949844196632.

The previous prime is 2112331213009. The next prime is 2112331213061. The reversal of 2112331213031 is 1303121332112.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2112331213031 is a prime.

It is a super-2 number, since 2×2112331213031² (a number of 25 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 = 2112331212988 and 2112331213006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2112331213061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81243508181 + ... + 81243508206.

It is an arithmetic number, because the mean of its divisors is an integer number (568704557358).

Almost surely, 2^{2112331213031} is an apocalyptic number.

2112331213031 is a deficient number, since it is larger than the sum of its proper divisors (162487016401).

2112331213031 is a wasteful number, since it uses less digits than its factorization.

2112331213031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162487016400.

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 2112331213031 its reverse (1303121332112), we get a palindrome (3415452545143).

The spelling of 2112331213031 in words is "two trillion, one hundred twelve billion, three hundred thirty-one million, two hundred thirteen thousand, thirty-one".