451320223 has 2 divisors, whose sum is σ = 451320224. Its totient is φ = 451320222.

The previous prime is 451320197. The next prime is 451320257. The reversal of 451320223 is 322023154.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 451320223 - 2¹³ = 451312031 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 451320194 and 451320203.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (451320263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 225660111 + 225660112.

It is an arithmetic number, because the mean of its divisors is an integer number (225660112).

Almost surely, 2^451320223 is an apocalyptic number.

451320223 is a deficient number, since it is larger than the sum of its proper divisors (1).

451320223 is an equidigital number, since it uses as much as digits as its factorization.

451320223 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 451320223 is about 21244.2985998597. The cubic root of 451320223 is about 767.0581076254.

Adding to 451320223 its reverse (322023154), we get a palindrome (773343377).

The spelling of 451320223 in words is "four hundred fifty-one million, three hundred twenty thousand, two hundred twenty-three".