1351506051531 has 24 divisors (see below), whose sum is σ = 2055159753920. Its totient is φ = 853483795056.

The previous prime is 1351506051529. The next prime is 1351506051589.

1351506051531 is a `hidden beast` number, since 1 + 3 + 5 + 1 + 5 + 0 + 605 + 15 + 31 = 666.

1351506051531 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 1351506051531 - 2¹ = 1351506051529 is a prime.

It is a super-2 number, since 2×1351506051531² (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 (1351506053531) 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 in 23 ways as a sum of consecutive naturals, for example, 1035036 + ... + 1942758.

Almost surely, 2^{1351506051531} is an apocalyptic number.

1351506051531 is a deficient number, since it is larger than the sum of its proper divisors (703653702389).

1351506051531 is a wasteful number, since it uses less digits than its factorization.

1351506051531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 916455 (or 916452 counting only the distinct ones).

The product of its (nonzero) digits is 33750, while the sum is 36.

The spelling of 1351506051531 in words is "one trillion, three hundred fifty-one billion, five hundred six million, fifty-one thousand, five hundred thirty-one".