403031423 has 2 divisors, whose sum is σ = 403031424. Its totient is φ = 403031422.

The previous prime is 403031407. The next prime is 403031437. The reversal of 403031423 is 324130304.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 403031423 - 2⁴ = 403031407 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 403031395 and 403031404.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (403031723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201515711 + 201515712.

It is an arithmetic number, because the mean of its divisors is an integer number (201515712).

Almost surely, 2^403031423 is an apocalyptic number.

403031423 is a deficient number, since it is larger than the sum of its proper divisors (1).

403031423 is an equidigital number, since it uses as much as digits as its factorization.

403031423 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 403031423 is about 20075.6425301907. The cubic root of 403031423 is about 738.6629270478.

Adding to 403031423 its reverse (324130304), we get a palindrome (727161727).

It can be divided in two parts, 4030 and 31423, that added together give a palindrome (35453).

The spelling of 403031423 in words is "four hundred three million, thirty-one thousand, four hundred twenty-three".