2131012553 has 4 divisors (see below), whose sum is σ = 2131131408. Its totient is φ = 2130893700.

The previous prime is 2131012549. The next prime is 2131012561. The reversal of 2131012553 is 3552101312.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 2131012553 - 2² = 2131012549 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2131012523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26423 + ... + 70428.

It is an arithmetic number, because the mean of its divisors is an integer number (532782852).

Almost surely, 2^2131012553 is an apocalyptic number.

It is an amenable number.

2131012553 is a deficient number, since it is larger than the sum of its proper divisors (118855).

2131012553 is an equidigital number, since it uses as much as digits as its factorization.

2131012553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118854.

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 2131012553 is about 46162.8915147221. The cubic root of 2131012553 is about 1286.8521999346.

Adding to 2131012553 its reverse (3552101312), we get a palindrome (5683113865).

The spelling of 2131012553 in words is "two billion, one hundred thirty-one million, twelve thousand, five hundred fifty-three".