401223023 has 4 divisors (see below), whose sum is σ = 401655840. Its totient is φ = 400790208.

The previous prime is 401223013. The next prime is 401223071. The reversal of 401223023 is 320322104.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 401223023 - 2²⁶ = 334114159 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 401222992 and 401223010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401223013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 215015 + ... + 216872.

It is an arithmetic number, because the mean of its divisors is an integer number (100413960).

Almost surely, 2^401223023 is an apocalyptic number.

401223023 is a deficient number, since it is larger than the sum of its proper divisors (432817).

401223023 is an equidigital number, since it uses as much as digits as its factorization.

401223023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 432816.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 401223023 is about 20030.5522390173. The cubic root of 401223023 is about 737.5564782181.

Adding to 401223023 its reverse (320322104), we get a palindrome (721545127).

The spelling of 401223023 in words is "four hundred one million, two hundred twenty-three thousand, twenty-three".