1312201423 has 16 divisors (see below), whose sum is σ = 1503835200. Its totient is φ = 1134245376.

The previous prime is 1312201361. The next prime is 1312201441. The reversal of 1312201423 is 3241022131.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1312201423 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1312201423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312201453) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29061 + ... + 58897.

It is an arithmetic number, because the mean of its divisors is an integer number (93989700).

Almost surely, 2^1312201423 is an apocalyptic number.

1312201423 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1312201423 is a deficient number, since it is larger than the sum of its proper divisors (191633777).

1312201423 is a wasteful number, since it uses less digits than its factorization.

1312201423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30066.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 1312201423 is about 36224.3208770020. The cubic root of 1312201423 is about 1094.7967549495.

Adding to 1312201423 its reverse (3241022131), we get a palindrome (4553223554).

The spelling of 1312201423 in words is "one billion, three hundred twelve million, two hundred one thousand, four hundred twenty-three".