1311101231405 has 8 divisors (see below), whose sum is σ = 1798081688832. Its totient is φ = 899040844368.

The previous prime is 1311101231389. The next prime is 1311101231413. The reversal of 1311101231405 is 5041321011131.

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 1311101231405 - 2⁴ = 1311101231389 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 18730017557 + ... + 18730017626.

It is an arithmetic number, because the mean of its divisors is an integer number (224760211104).

Almost surely, 2^{1311101231405} is an apocalyptic number.

It is an amenable number.

1311101231405 is a deficient number, since it is larger than the sum of its proper divisors (486980457427).

1311101231405 is an equidigital number, since it uses as much as digits as its factorization.

1311101231405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37460035195.

The product of its (nonzero) digits is 360, while the sum is 23.

Adding to 1311101231405 its reverse (5041321011131), we get a palindrome (6352422242536).

The spelling of 1311101231405 in words is "one trillion, three hundred eleven billion, one hundred one million, two hundred thirty-one thousand, four hundred five".