2131223223031 has 32 divisors (see below), whose sum is σ = 2637323712000. Its totient is φ = 1680722092032.

The previous prime is 2131223223011. The next prime is 2131223223113. The reversal of 2131223223031 is 1303223221312.

It is a cyclic number.

It is not a de Polignac number, because 2131223223031 - 2³⁵ = 2096863484663 is a prime.

It is a super-2 number, since 2×2131223223031² (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 = 2131223222987 and 2131223223005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2131223223011) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 408855 + ... + 2104663.

It is an arithmetic number, because the mean of its divisors is an integer number (82416366000).

Almost surely, 2^{2131223223031} is an apocalyptic number.

2131223223031 is a deficient number, since it is larger than the sum of its proper divisors (506100488969).

2131223223031 is a wasteful number, since it uses less digits than its factorization.

2131223223031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1696071.

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 2131223223031 its reverse (1303223221312), we get a palindrome (3434446444343).

The spelling of 2131223223031 in words is "two trillion, one hundred thirty-one billion, two hundred twenty-three million, two hundred twenty-three thousand, thirty-one".