2231121210031 has 48 divisors (see below), whose sum is σ = 2745761090400. Its totient is φ = 1805025503232.

The previous prime is 2231121209971. The next prime is 2231121210079. The reversal of 2231121210031 is 1300121211322.

It is not a de Polignac number, because 2231121210031 - 2⁹ = 2231121209519 is a prime.

It is a super-3 number, since 3×2231121210031³ (a number of 38 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2231121209990 and 2231121210008.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2231121210931) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 11626660 + ... + 11816998.

It is an arithmetic number, because the mean of its divisors is an integer number (57203356050).

Almost surely, 2^{2231121210031} is an apocalyptic number.

2231121210031 is a deficient number, since it is larger than the sum of its proper divisors (514639880369).

2231121210031 is a wasteful number, since it uses less digits than its factorization.

2231121210031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190568 (or 190561 counting only the distinct ones).

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

Adding to 2231121210031 its reverse (1300121211322), we get a palindrome (3531242421353).

The spelling of 2231121210031 in words is "two trillion, two hundred thirty-one billion, one hundred twenty-one million, two hundred ten thousand, thirty-one".