7223123 has 2 divisors, whose sum is σ = 7223124. Its totient is φ = 7223122.

The previous prime is 7223119. The next prime is 7223137. The reversal of 7223123 is 3213227.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 7223123 - 2² = 7223119 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 7223095 and 7223104.

It is not a weakly prime, because it can be changed into another prime (7223143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3611561 + 3611562.

It is an arithmetic number, because the mean of its divisors is an integer number (3611562).

Almost surely, 2^7223123 is an apocalyptic number.

7223123 is a deficient number, since it is larger than the sum of its proper divisors (1).

7223123 is an equidigital number, since it uses as much as digits as its factorization.

7223123 is an evil number, because the sum of its binary digits is even.

The product of its digits is 504, while the sum is 20.

The square root of 7223123 is about 2687.5868358064. The cubic root of 7223123 is about 193.3043690920.

The spelling of 7223123 in words is "seven million, two hundred twenty-three thousand, one hundred twenty-three".