531240981937 has 4 divisors (see below), whose sum is σ = 535118653476. Its totient is φ = 527363310400.

The previous prime is 531240981923. The next prime is 531240981941. The reversal of 531240981937 is 739189042135.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 363797160336 + 167443821601 = 603156^2 + 409199^2 .

It is a cyclic number.

It is not a de Polignac number, because 531240981937 - 2¹¹ = 531240979889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (531240988937) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1938835564 + ... + 1938835837.

It is an arithmetic number, because the mean of its divisors is an integer number (133779663369).

Almost surely, 2^531240981937 is an apocalyptic number.

It is an amenable number.

531240981937 is a deficient number, since it is larger than the sum of its proper divisors (3877671539).

531240981937 is a wasteful number, since it uses less digits than its factorization.

531240981937 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3877671538.

The product of its (nonzero) digits is 1632960, while the sum is 52.

The spelling of 531240981937 in words is "five hundred thirty-one billion, two hundred forty million, nine hundred eighty-one thousand, nine hundred thirty-seven".