12531461 has 2 divisors, whose sum is σ = 12531462. Its totient is φ = 12531460.

The previous prime is 12531443. The next prime is 12531473. The reversal of 12531461 is 16413521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10857025 + 1674436 = 3295^2 + 1294^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12531461 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12531661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6265730 + 6265731.

It is an arithmetic number, because the mean of its divisors is an integer number (6265731).

Almost surely, 2^12531461 is an apocalyptic number.

It is an amenable number.

12531461 is a deficient number, since it is larger than the sum of its proper divisors (1).

12531461 is an equidigital number, since it uses as much as digits as its factorization.

12531461 is an evil number, because the sum of its binary digits is even.

The product of its digits is 720, while the sum is 23.

The square root of 12531461 is about 3539.9803671772. The cubic root of 12531461 is about 232.2739839270.

Adding to 12531461 its reverse (16413521), we get a palindrome (28944982).

The spelling of 12531461 in words is "twelve million, five hundred thirty-one thousand, four hundred sixty-one".