1311430431101 has 6 divisors (see below), whose sum is σ = 1525541521950. Its totient is φ = 1124083226616.

The previous prime is 1311430431097. The next prime is 1311430431107. The reversal of 1311430431101 is 1011340341131.

It can be written as a sum of positive squares in only one way, i.e., 934711908025 + 376718523076 = 966805^2 + 613774^2 .

It is not a de Polignac number, because 1311430431101 - 2² = 1311430431097 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 (1311430431107) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13381943126 + ... + 13381943223.

It is an arithmetic number, because the mean of its divisors is an integer number (254256920325).

Almost surely, 2^{1311430431101} is an apocalyptic number.

It is an amenable number.

1311430431101 is a deficient number, since it is larger than the sum of its proper divisors (214111090849).

1311430431101 is an equidigital number, since it uses as much as digits as its factorization.

1311430431101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26763886363 (or 26763886356 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 23.

Adding to 1311430431101 its reverse (1011340341131), we get a palindrome (2322770772232).

The spelling of 1311430431101 in words is "one trillion, three hundred eleven billion, four hundred thirty million, four hundred thirty-one thousand, one hundred one".