320630023 has 4 divisors (see below), whose sum is σ = 366434320. Its totient is φ = 274825728.

The previous prime is 320630017. The next prime is 320630027. The reversal of 320630023 is 320036023.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 320036023 = 3037 ⋅105379.

It is a cyclic number.

It is not a de Polignac number, because 320630023 - 2¹³ = 320621831 is a prime.

It is a super-2 number, since 2×320630023² = 205607223297961058, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320630027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22902138 + ... + 22902151.

It is an arithmetic number, because the mean of its divisors is an integer number (91608580).

Almost surely, 2^320630023 is an apocalyptic number.

320630023 is a deficient number, since it is larger than the sum of its proper divisors (45804297).

320630023 is an equidigital number, since it uses as much as digits as its factorization.

320630023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45804296.

The product of its (nonzero) digits is 648, while the sum is 19.

The square root of 320630023 is about 17906.1448391327. The cubic root of 320630023 is about 684.4389694742.

Adding to 320630023 its reverse (320036023), we get a palindrome (640666046).

The spelling of 320630023 in words is "three hundred twenty million, six hundred thirty thousand, twenty-three".