403123243 has 2 divisors, whose sum is σ = 403123244. Its totient is φ = 403123242.

The previous prime is 403123199. The next prime is 403123271. The reversal of 403123243 is 342321304.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 403123243 - 2¹⁷ = 402992171 is a prime.

It is not a weakly prime, because it can be changed into another prime (403123543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201561621 + 201561622.

It is an arithmetic number, because the mean of its divisors is an integer number (201561622).

Almost surely, 2^403123243 is an apocalyptic number.

403123243 is a deficient number, since it is larger than the sum of its proper divisors (1).

403123243 is an equidigital number, since it uses as much as digits as its factorization.

403123243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 22.

The square root of 403123243 is about 20077.9292507968. The cubic root of 403123243 is about 738.7190176949.

Adding to 403123243 its reverse (342321304), we get a palindrome (745444547).

The spelling of 403123243 in words is "four hundred three million, one hundred twenty-three thousand, two hundred forty-three".