2123112020031 has 6 divisors (see below), whose sum is σ = 3066717362280. Its totient is φ = 1415408013348.

The previous prime is 2123112020021. The next prime is 2123112020033. The reversal of 2123112020031 is 1300202113212.

It is not a de Polignac number, because 2123112020031 - 2⁹ = 2123112019519 is a prime.

It is a super-2 number, since 2×2123112020031² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2123112019986 and 2123112020013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2123112020033) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 117950667771 + ... + 117950667788.

It is an arithmetic number, because the mean of its divisors is an integer number (511119560380).

Almost surely, 2^{2123112020031} is an apocalyptic number.

2123112020031 is a deficient number, since it is larger than the sum of its proper divisors (943605342249).

2123112020031 is a wasteful number, since it uses less digits than its factorization.

2123112020031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235901335565 (or 235901335562 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 2123112020031 its reverse (1300202113212), we get a palindrome (3423314133243).

The spelling of 2123112020031 in words is "two trillion, one hundred twenty-three billion, one hundred twelve million, twenty thousand, thirty-one".