1240531315015 has 16 divisors (see below), whose sum is σ = 1576294382880. Its totient is φ = 933993840640.

The previous prime is 1240531315003. The next prime is 1240531315057. The reversal of 1240531315015 is 5105131350421.

It is not a de Polignac number, because 1240531315015 - 2³⁹ = 690775501127 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1116096 + ... + 1930474.

It is an arithmetic number, because the mean of its divisors is an integer number (98518398930).

Almost surely, 2^{1240531315015} is an apocalyptic number.

1240531315015 is a deficient number, since it is larger than the sum of its proper divisors (335763067865).

1240531315015 is a wasteful number, since it uses less digits than its factorization.

1240531315015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 832322.

The product of its (nonzero) digits is 9000, while the sum is 31.

Adding to 1240531315015 its reverse (5105131350421), we get a palindrome (6345662665436).

The spelling of 1240531315015 in words is "one trillion, two hundred forty billion, five hundred thirty-one million, three hundred fifteen thousand, fifteen".