1311423324155 has 8 divisors (see below), whose sum is σ = 1798523416032. Its totient is φ = 899261707968.

The previous prime is 1311423324137. The next prime is 1311423324209. The reversal of 1311423324155 is 5514233241131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1311423324155 - 2¹² = 1311423320059 is a prime.

It is a super-2 number, since 2×1311423324155² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (35), and also a Moran number because the ratio is a prime number: 37469237833 = 1311423324155 / (1 + 3 + 1 + 1 + 4 + 2 + 3 + 3 + 2 + 4 + 1 + 5 + 5).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18734618882 + ... + 18734618951.

It is an arithmetic number, because the mean of its divisors is an integer number (224815427004).

Almost surely, 2^{1311423324155} is an apocalyptic number.

1311423324155 is a deficient number, since it is larger than the sum of its proper divisors (487100091877).

1311423324155 is an equidigital number, since it uses as much as digits as its factorization.

1311423324155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37469237845.

The product of its digits is 43200, while the sum is 35.

Adding to 1311423324155 its reverse (5514233241131), we get a palindrome (6825656565286).

The spelling of 1311423324155 in words is "one trillion, three hundred eleven billion, four hundred twenty-three million, three hundred twenty-four thousand, one hundred fifty-five".