131612573 has 2 divisors, whose sum is σ = 131612574. Its totient is φ = 131612572.

The previous prime is 131612543. The next prime is 131612581. The reversal of 131612573 is 375216131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 126405049 + 5207524 = 11243^2 + 2282^2 .

It is a cyclic number.

It is not a de Polignac number, because 131612573 - 2¹⁰ = 131611549 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131612543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65806286 + 65806287.

It is an arithmetic number, because the mean of its divisors is an integer number (65806287).

Almost surely, 2^131612573 is an apocalyptic number.

It is an amenable number.

131612573 is a deficient number, since it is larger than the sum of its proper divisors (1).

131612573 is an equidigital number, since it uses as much as digits as its factorization.

131612573 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3780, while the sum is 29.

The square root of 131612573 is about 11472.2523071976. The cubic root of 131612573 is about 508.6657073692.

The spelling of 131612573 in words is "one hundred thirty-one million, six hundred twelve thousand, five hundred seventy-three".