1531704426013 has 2 divisors, whose sum is σ = 1531704426014. Its totient is φ = 1531704426012.

The previous prime is 1531704425989. The next prime is 1531704426041. The reversal of 1531704426013 is 3106244071351.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1529582718169 + 2121707844 = 1236763^2 + 46062^2 .

It is a cyclic number.

It is not a de Polignac number, because 1531704426013 - 2⁵ = 1531704425981 is a prime.

It is a super-2 number, since 2×1531704426013² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1531707426013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 765852213006 + 765852213007.

It is an arithmetic number, because the mean of its divisors is an integer number (765852213007).

Almost surely, 2^{1531704426013} is an apocalyptic number.

It is an amenable number.

1531704426013 is a deficient number, since it is larger than the sum of its proper divisors (1).

1531704426013 is an equidigital number, since it uses as much as digits as its factorization.

1531704426013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 60480, while the sum is 37.

Adding to 1531704426013 its reverse (3106244071351), we get a palindrome (4637948497364).

The spelling of 1531704426013 in words is "one trillion, five hundred thirty-one billion, seven hundred four million, four hundred twenty-six thousand, thirteen".