1531941288913 has 12 divisors (see below), whose sum is σ = 1815677818740. Its totient is φ = 1288317200352.

The previous prime is 1531941288893. The next prime is 1531941288937. The reversal of 1531941288913 is 3198821491351.

It can be written as a sum of positive squares in 2 ways, for example, as 1357558210449 + 174383078464 = 1165143^2 + 417592^2 .

It is not a de Polignac number, because 1531941288913 - 2²⁹ = 1531404418001 is a prime.

It is a super-2 number, since 2×1531941288913² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1531941288953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 294941818 + ... + 294947011.

It is an arithmetic number, because the mean of its divisors is an integer number (151306484895).

Almost surely, 2^{1531941288913} is an apocalyptic number.

It is an amenable number.

1531941288913 is a deficient number, since it is larger than the sum of its proper divisors (283736529827).

1531941288913 is an equidigital number, since it uses as much as digits as its factorization.

1531941288913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 589888896 (or 589888889 counting only the distinct ones).

The product of its digits is 1866240, while the sum is 55.

The spelling of 1531941288913 in words is "one trillion, five hundred thirty-one billion, nine hundred forty-one million, two hundred eighty-eight thousand, nine hundred thirteen".