7931423 has 2 divisors, whose sum is σ = 7931424. Its totient is φ = 7931422.

The previous prime is 7931411. The next prime is 7931437. The reversal of 7931423 is 3241397.

It is a weak prime.

It is an emirp because it is prime and its reverse (3241397) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7931423 - 2¹⁰ = 7930399 is a prime.

It is a d-powerful number, because it can be written as 7⁴ + 9² + 3⁵ + 1 + 4¹⁰ + 2²¹ + 3¹⁴ .

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7931453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3965711 + 3965712.

It is an arithmetic number, because the mean of its divisors is an integer number (3965712).

Almost surely, 2^7931423 is an apocalyptic number.

7931423 is a deficient number, since it is larger than the sum of its proper divisors (1).

7931423 is an equidigital number, since it uses as much as digits as its factorization.

7931423 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4536, while the sum is 29.

The square root of 7931423 is about 2816.2782177903. The cubic root of 7931423 is about 199.4268842605.

The spelling of 7931423 in words is "seven million, nine hundred thirty-one thousand, four hundred twenty-three".