403441421023 has 4 divisors (see below), whose sum is σ = 403448168488. Its totient is φ = 403434673560.

The previous prime is 403441421011. The next prime is 403441421039. The reversal of 403441421023 is 320124144304.

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 403441421023 - 2⁹ = 403441420511 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 403441420982 and 403441421000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (403441421003) 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, 3283236 + ... + 3403897.

It is an arithmetic number, because the mean of its divisors is an integer number (100862042122).

Almost surely, 2^403441421023 is an apocalyptic number.

403441421023 is a deficient number, since it is larger than the sum of its proper divisors (6747465).

403441421023 is an equidigital number, since it uses as much as digits as its factorization.

403441421023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6747464.

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 403441421023 its reverse (320124144304), we get a palindrome (723565565327).

It can be divided in two parts, 403441 and 421023, that added together give a square (824464 = 908²).

The spelling of 403441421023 in words is "four hundred three billion, four hundred forty-one million, four hundred twenty-one thousand, twenty-three".