7181423 has 2 divisors, whose sum is σ = 7181424. Its totient is φ = 7181422.

The previous prime is 7181399. The next prime is 7181431. The reversal of 7181423 is 3241817.

It is a strong prime.

It is an emirp because it is prime and its reverse (3241817) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7181423 - 2¹⁰ = 7180399 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 7181392 and 7181401.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7181443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3590711 + 3590712.

It is an arithmetic number, because the mean of its divisors is an integer number (3590712).

Almost surely, 2^7181423 is an apocalyptic number.

7181423 is a deficient number, since it is larger than the sum of its proper divisors (1).

7181423 is an equidigital number, since it uses as much as digits as its factorization.

7181423 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1344, while the sum is 26.

The square root of 7181423 is about 2679.8177176816. The cubic root of 7181423 is about 192.9316607716.

The spelling of 7181423 in words is "seven million, one hundred eighty-one thousand, four hundred twenty-three".