1213423484279 has 2 divisors, whose sum is σ = 1213423484280. Its totient is φ = 1213423484278.

The previous prime is 1213423484249. The next prime is 1213423484293. The reversal of 1213423484279 is 9724843243121.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1213423484279 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1213423484249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606711742139 + 606711742140.

It is an arithmetic number, because the mean of its divisors is an integer number (606711742140).

Almost surely, 2^{1213423484279} is an apocalyptic number.

1213423484279 is a deficient number, since it is larger than the sum of its proper divisors (1).

1213423484279 is an equidigital number, since it uses as much as digits as its factorization.

1213423484279 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2322432, while the sum is 50.

The spelling of 1213423484279 in words is "one trillion, two hundred thirteen billion, four hundred twenty-three million, four hundred eighty-four thousand, two hundred seventy-nine".