403401440023 has 2 divisors, whose sum is σ = 403401440024. Its totient is φ = 403401440022.

The previous prime is 403401440017. The next prime is 403401440027. The reversal of 403401440023 is 320044104304.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-403401440023 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 403401440023.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (403401440027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201700720011 + 201700720012.

It is an arithmetic number, because the mean of its divisors is an integer number (201700720012).

Almost surely, 2^403401440023 is an apocalyptic number.

403401440023 is a deficient number, since it is larger than the sum of its proper divisors (1).

403401440023 is an equidigital number, since it uses as much as digits as its factorization.

403401440023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4608, while the sum is 25.

Adding to 403401440023 its reverse (320044104304), we get a palindrome (723445544327).

The spelling of 403401440023 in words is "four hundred three billion, four hundred one million, four hundred forty thousand, twenty-three".