531245440237 has 2 divisors, whose sum is σ = 531245440238. Its totient is φ = 531245440236.

The previous prime is 531245440189. The next prime is 531245440267. The reversal of 531245440237 is 732044542135.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 370717805956 + 160527634281 = 608866^2 + 400659^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-531245440237 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 531245440237.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (531245440267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 265622720118 + 265622720119.

It is an arithmetic number, because the mean of its divisors is an integer number (265622720119).

Almost surely, 2^531245440237 is an apocalyptic number.

It is an amenable number.

531245440237 is a deficient number, since it is larger than the sum of its proper divisors (1).

531245440237 is an equidigital number, since it uses as much as digits as its factorization.

531245440237 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 403200, while the sum is 40.

The spelling of 531245440237 in words is "five hundred thirty-one billion, two hundred forty-five million, four hundred forty thousand, two hundred thirty-seven".