1231344422005 has 16 divisors (see below), whose sum is σ = 1479150711360. Its totient is φ = 984050995968.

The previous prime is 1231344421969. The next prime is 1231344422027. The reversal of 1231344422005 is 5002244431321.

It is a cyclic number.

It is not a de Polignac number, because 1231344422005 - 2²⁷ = 1231210204277 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28198669 + ... + 28242301.

It is an arithmetic number, because the mean of its divisors is an integer number (92446919460).

Almost surely, 2^{1231344422005} is an apocalyptic number.

It is an amenable number.

1231344422005 is a deficient number, since it is larger than the sum of its proper divisors (247806289355).

1231344422005 is a wasteful number, since it uses less digits than its factorization.

1231344422005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49380.

The product of its (nonzero) digits is 23040, while the sum is 31.

Adding to 1231344422005 its reverse (5002244431321), we get a palindrome (6233588853326).

The spelling of 1231344422005 in words is "one trillion, two hundred thirty-one billion, three hundred forty-four million, four hundred twenty-two thousand, five".