2131231001233 has 4 divisors (see below), whose sum is σ = 2134777143268. Its totient is φ = 2127684859200.

The previous prime is 2131231001231. The next prime is 2131231001303. The reversal of 2131231001233 is 3321001321312.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1864885209664 + 266345791569 = 1365608^2 + 516087^2 .

It is a cyclic number.

It is not a de Polignac number, because 2131231001233 - 2¹ = 2131231001231 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2131231001231) 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, 1773070116 + ... + 1773071317.

It is an arithmetic number, because the mean of its divisors is an integer number (533694285817).

Almost surely, 2^{2131231001233} is an apocalyptic number.

It is an amenable number.

2131231001233 is a deficient number, since it is larger than the sum of its proper divisors (3546142035).

2131231001233 is an equidigital number, since it uses as much as digits as its factorization.

2131231001233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3546142034.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 2131231001233 its reverse (3321001321312), we get a palindrome (5452232322545).

The spelling of 2131231001233 in words is "two trillion, one hundred thirty-one billion, two hundred thirty-one million, one thousand, two hundred thirty-three".