12131573 has 2 divisors, whose sum is σ = 12131574. Its totient is φ = 12131572.

The previous prime is 12131569. The next prime is 12131621. The reversal of 12131573 is 37513121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11135569 + 996004 = 3337^2 + 998^2 .

It is an emirp because it is prime and its reverse (37513121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12131573 - 2² = 12131569 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12131513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6065786 + 6065787.

It is an arithmetic number, because the mean of its divisors is an integer number (6065787).

Almost surely, 2^12131573 is an apocalyptic number.

It is an amenable number.

12131573 is a deficient number, since it is larger than the sum of its proper divisors (1).

12131573 is an equidigital number, since it uses as much as digits as its factorization.

12131573 is an evil number, because the sum of its binary digits is even.

The product of its digits is 630, while the sum is 23.

The square root of 12131573 is about 3483.0407692130. The cubic root of 12131573 is about 229.7765504705.

Adding to 12131573 its reverse (37513121), we get a palindrome (49644694).

The spelling of 12131573 in words is "twelve million, one hundred thirty-one thousand, five hundred seventy-three".