531240981941 has 2 divisors, whose sum is σ = 531240981942. Its totient is φ = 531240981940.

The previous prime is 531240981923. The next prime is 531240982009. The reversal of 531240981941 is 149189042135.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 440525565841 + 90715416100 = 663721^2 + 301190^2 .

It is a cyclic number.

It is not a de Polignac number, because 531240981941 - 2¹⁰ = 531240980917 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (531240987941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 265620490970 + 265620490971.

It is an arithmetic number, because the mean of its divisors is an integer number (265620490971).

Almost surely, 2^531240981941 is an apocalyptic number.

It is an amenable number.

531240981941 is a deficient number, since it is larger than the sum of its proper divisors (1).

531240981941 is an equidigital number, since it uses as much as digits as its factorization.

531240981941 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 311040, while the sum is 47.

The spelling of 531240981941 in words is "five hundred thirty-one billion, two hundred forty million, nine hundred eighty-one thousand, nine hundred forty-one".