1231144214305 has 4 divisors (see below), whose sum is σ = 1477373057172. Its totient is φ = 984915371440.

The previous prime is 1231144214281. The next prime is 1231144214371. The reversal of 1231144214305 is 5034124411321.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 430818951424 + 800325262881 = 656368^2 + 894609^2 .

It is not a de Polignac number, because 1231144214305 - 2¹³ = 1231144206113 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 123114421426 + ... + 123114421435.

It is an arithmetic number, because the mean of its divisors is an integer number (369343264293).

Almost surely, 2^{1231144214305} is an apocalyptic number.

It is an amenable number.

1231144214305 is a deficient number, since it is larger than the sum of its proper divisors (246228842867).

1231144214305 is an equidigital number, since it uses as much as digits as its factorization.

1231144214305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246228842866.

The product of its (nonzero) digits is 11520, while the sum is 31.

Adding to 1231144214305 its reverse (5034124411321), we get a palindrome (6265268625626).

The spelling of 1231144214305 in words is "one trillion, two hundred thirty-one billion, one hundred forty-four million, two hundred fourteen thousand, three hundred five".