1231344022513 has 16 divisors (see below), whose sum is σ = 1409026793472. Its totient is φ = 1065127954000.

The previous prime is 1231344022511. The next prime is 1231344022529. The reversal of 1231344022513 is 3152204431321.

It is not a de Polignac number, because 1231344022513 - 2¹ = 1231344022511 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1231344022511) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 12692443 + ... + 12789088.

It is an arithmetic number, because the mean of its divisors is an integer number (88064174592).

Almost surely, 2^{1231344022513} is an apocalyptic number.

It is an amenable number.

1231344022513 is a deficient number, since it is larger than the sum of its proper divisors (177682770959).

1231344022513 is a wasteful number, since it uses less digits than its factorization.

1231344022513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25481756.

The product of its (nonzero) digits is 17280, while the sum is 31.

Adding to 1231344022513 its reverse (3152204431321), we get a palindrome (4383548453834).

The spelling of 1231344022513 in words is "one trillion, two hundred thirty-one billion, three hundred forty-four million, twenty-two thousand, five hundred thirteen".