2131231001131 has 4 divisors (see below), whose sum is σ = 2132623054264. Its totient is φ = 2129838948000.

The previous prime is 2131231001101. The next prime is 2131231001147. The reversal of 2131231001131 is 1311001321312.

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 2131231001131 - 2⁵ = 2131231001099 is a prime.

It is a super-2 number, since 2×2131231001131² (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 = 2131231001099 and 2131231001108.

It is not an unprimeable number, because it can be changed into a prime (2131231001101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 696024270 + ... + 696027331.

It is an arithmetic number, because the mean of its divisors is an integer number (533155763566).

Almost surely, 2^{2131231001131} is an apocalyptic number.

2131231001131 is a deficient number, since it is larger than the sum of its proper divisors (1392053133).

2131231001131 is a wasteful number, since it uses less digits than its factorization.

2131231001131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1392053132.

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 2131231001131 its reverse (1311001321312), we get a palindrome (3442232322443).

The spelling of 2131231001131 in words is "two trillion, one hundred thirty-one billion, two hundred thirty-one million, one thousand, one hundred thirty-one".