1213331423 has 8 divisors (see below), whose sum is σ = 1220231376. Its totient is φ = 1206446400.

The previous prime is 1213331389. The next prime is 1213331437. The reversal of 1213331423 is 3241333121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1213331423 - 2¹⁰ = 1213330399 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 (1213331453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 185753 + ... + 192173.

It is an arithmetic number, because the mean of its divisors is an integer number (152528922).

Almost surely, 2^1213331423 is an apocalyptic number.

1213331423 is a deficient number, since it is larger than the sum of its proper divisors (6899953).

1213331423 is an equidigital number, since it uses as much as digits as its factorization.

1213331423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7465.

The product of its digits is 1296, while the sum is 23.

The square root of 1213331423 is about 34832.9071855910. The cubic root of 1213331423 is about 1066.5792942865.

Adding to 1213331423 its reverse (3241333121), we get a palindrome (4454664544).

The spelling of 1213331423 in words is "one billion, two hundred thirteen million, three hundred thirty-one thousand, four hundred twenty-three".