2131306356 has 12 divisors (see below), whose sum is σ = 4973048192. Its totient is φ = 710435448.

The previous prime is 2131306273. The next prime is 2131306363. The reversal of 2131306356 is 6536031312.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

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, 88804420 + ... + 88804443.

Almost surely, 2^2131306356 is an apocalyptic number.

It is an amenable number.

2131306356 is an abundant number, since it is smaller than the sum of its proper divisors (2841741836).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2131306356 is a wasteful number, since it uses less digits than its factorization.

2131306356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177608870 (or 177608868 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 30.

The square root of 2131306356 is about 46166.0736472141. The cubic root of 2131306356 is about 1286.9113367148.

Adding to 2131306356 its reverse (6536031312), we get a palindrome (8667337668).

The spelling of 2131306356 in words is "two billion, one hundred thirty-one million, three hundred six thousand, three hundred fifty-six".