1361253124531 has 2 divisors, whose sum is σ = 1361253124532. Its totient is φ = 1361253124530.

The previous prime is 1361253124513. The next prime is 1361253124547. The reversal of 1361253124531 is 1354213521631.

Together with previous prime (1361253124513) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1361253124531 - 2⁹ = 1361253124019 is a prime.

It is a super-2 number, since 2×1361253124531² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1361253124571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 680626562265 + 680626562266.

It is an arithmetic number, because the mean of its divisors is an integer number (680626562266).

Almost surely, 2^{1361253124531} is an apocalyptic number.

1361253124531 is a deficient number, since it is larger than the sum of its proper divisors (1).

1361253124531 is an equidigital number, since it uses as much as digits as its factorization.

1361253124531 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 64800, while the sum is 37.

The spelling of 1361253124531 in words is "one trillion, three hundred sixty-one billion, two hundred fifty-three million, one hundred twenty-four thousand, five hundred thirty-one".