2312521 has 2 divisors, whose sum is σ = 2312522. Its totient is φ = 2312520.

The previous prime is 2312477. The next prime is 2312539. The reversal of 2312521 is 1252132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1690000 + 622521 = 1300^2 + 789^2 .

It is a cyclic number.

It is not a de Polignac number, because 2312521 - 2¹⁷ = 2181449 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2312495 and 2312504.

It is not a weakly prime, because it can be changed into another prime (2312021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1156260 + 1156261.

It is an arithmetic number, because the mean of its divisors is an integer number (1156261).

2^2312521 is an apocalyptic number.

It is an amenable number.

2312521 is a deficient number, since it is larger than the sum of its proper divisors (1).

2312521 is an equidigital number, since it uses as much as digits as its factorization.

2312521 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 120, while the sum is 16.

The square root of 2312521 is about 1520.6975373163. The cubic root of 2312521 is about 132.2397121081.

Adding to 2312521 its reverse (1252132), we get a palindrome (3564653).

It can be divided in two parts, 23 and 12521, that added together give a square (12544 = 112²).

The spelling of 2312521 in words is "two million, three hundred twelve thousand, five hundred twenty-one".