2120231331131 has 4 divisors (see below), whose sum is σ = 2130279821064. Its totient is φ = 2110182841200.

The previous prime is 2120231331121. The next prime is 2120231331181. The reversal of 2120231331131 is 1311331320212.

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

It is a cyclic number.

It is not a de Polignac number, because 2120231331131 - 2²² = 2120227136827 is a prime.

It is a super-2 number, since 2×2120231331131² (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 = 2120231331097 and 2120231331106.

It is not an unprimeable number, because it can be changed into a prime (2120231331121) 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, 5024244650 + ... + 5024245071.

It is an arithmetic number, because the mean of its divisors is an integer number (532569955266).

Almost surely, 2^{2120231331131} is an apocalyptic number.

2120231331131 is a deficient number, since it is larger than the sum of its proper divisors (10048489933).

2120231331131 is a wasteful number, since it uses less digits than its factorization.

2120231331131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10048489932.

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

Adding to 2120231331131 its reverse (1311331320212), we get a palindrome (3431562651343).

The spelling of 2120231331131 in words is "two trillion, one hundred twenty billion, two hundred thirty-one million, three hundred thirty-one thousand, one hundred thirty-one".