1423313191 has 2 divisors, whose sum is σ = 1423313192. Its totient is φ = 1423313190.

The previous prime is 1423313189. The next prime is 1423313231. The reversal of 1423313191 is 1913133241.

It is a weak prime.

It is an emirp because it is prime and its reverse (1913133241) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1423313191 - 2¹ = 1423313189 is a prime.

Together with 1423313189, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1423313141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 711656595 + 711656596.

It is an arithmetic number, because the mean of its divisors is an integer number (711656596).

Almost surely, 2^1423313191 is an apocalyptic number.

1423313191 is a deficient number, since it is larger than the sum of its proper divisors (1).

1423313191 is an equidigital number, since it uses as much as digits as its factorization.

1423313191 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1944, while the sum is 28.

The square root of 1423313191 is about 37726.8232296333. The cubic root of 1423313191 is about 1124.8643631701.

The spelling of 1423313191 in words is "one billion, four hundred twenty-three million, three hundred thirteen thousand, one hundred ninety-one".