1311300223615 has 4 divisors (see below), whose sum is σ = 1573560268344. Its totient is φ = 1049040178888.

The previous prime is 1311300223613. The next prime is 1311300223657. The reversal of 1311300223615 is 5163220031131.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1311300223615 - 2¹ = 1311300223613 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311300223613) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 131130022357 + ... + 131130022366.

It is an arithmetic number, because the mean of its divisors is an integer number (393390067086).

Almost surely, 2^{1311300223615} is an apocalyptic number.

1311300223615 is a deficient number, since it is larger than the sum of its proper divisors (262260044729).

1311300223615 is an equidigital number, since it uses as much as digits as its factorization.

1311300223615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262260044728.

The product of its (nonzero) digits is 3240, while the sum is 28.

Adding to 1311300223615 its reverse (5163220031131), we get a palindrome (6474520254746).

The spelling of 1311300223615 in words is "one trillion, three hundred eleven billion, three hundred million, two hundred twenty-three thousand, six hundred fifteen".