2531113442105 has 4 divisors (see below), whose sum is σ = 3037336130532. Its totient is φ = 2024890753680.

The previous prime is 2531113442087. The next prime is 2531113442129. The reversal of 2531113442105 is 5012443111352.

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 1616529159184 + 914584282921 = 1271428^2 + 956339^2 .

It is not a de Polignac number, because 2531113442105 - 2²⁰ = 2531112393529 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 253111344206 + ... + 253111344215.

It is an arithmetic number, because the mean of its divisors is an integer number (759334032633).

Almost surely, 2^{2531113442105} is an apocalyptic number.

It is an amenable number.

2531113442105 is a deficient number, since it is larger than the sum of its proper divisors (506222688427).

2531113442105 is an equidigital number, since it uses as much as digits as its factorization.

2531113442105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 506222688426.

The product of its (nonzero) digits is 14400, while the sum is 32.

Adding to 2531113442105 its reverse (5012443111352), we get a palindrome (7543556553457).

The spelling of 2531113442105 in words is "two trillion, five hundred thirty-one billion, one hundred thirteen million, four hundred forty-two thousand, one hundred five".