2131131325 has 12 divisors (see below), whose sum is σ = 2692464948. Its totient is φ = 1672736000.

The previous prime is 2131131307. The next prime is 2131131329. The reversal of 2131131325 is 5231311312.

It can be written as a sum of positive squares in 6 ways, for example, as 76685049 + 2054446276 = 8757^2 + 45326^2 .

It is not a de Polignac number, because 2131131325 - 2¹¹ = 2131129277 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2131131296 and 2131131305.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2131131329) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 802876 + ... + 805525.

It is an arithmetic number, because the mean of its divisors is an integer number (224372079).

Almost surely, 2^2131131325 is an apocalyptic number.

2131131325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2131131325 is a deficient number, since it is larger than the sum of its proper divisors (561333623).

2131131325 is a wasteful number, since it uses less digits than its factorization.

2131131325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1608464 (or 1608459 counting only the distinct ones).

The product of its digits is 540, while the sum is 22.

The square root of 2131131325 is about 46164.1779413432. The cubic root of 2131131325 is about 1286.8761070626.

Adding to 2131131325 its reverse (5231311312), we get a palindrome (7362442637).

The spelling of 2131131325 in words is "two billion, one hundred thirty-one million, one hundred thirty-one thousand, three hundred twenty-five".