1312161240115 has 16 divisors (see below), whose sum is σ = 1721022782976. Its totient is φ = 952474399200.

The previous prime is 1312161240113. The next prime is 1312161240223. The reversal of 1312161240115 is 5110421612131.

It is a happy number.

It is not a de Polignac number, because 1312161240115 - 2¹ = 1312161240113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1312161240113) 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 15 ways as a sum of consecutive naturals, for example, 22779531 + ... + 22837060.

It is an arithmetic number, because the mean of its divisors is an integer number (107563923936).

Almost surely, 2^{1312161240115} is an apocalyptic number.

1312161240115 is a deficient number, since it is larger than the sum of its proper divisors (408861542861).

1312161240115 is a wasteful number, since it uses less digits than its factorization.

1312161240115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45617130.

The product of its (nonzero) digits is 1440, while the sum is 28.

Adding to 1312161240115 its reverse (5110421612131), we get a palindrome (6422582852246).

The spelling of 1312161240115 in words is "one trillion, three hundred twelve billion, one hundred sixty-one million, two hundred forty thousand, one hundred fifteen".