403423031 has 8 divisors (see below), whose sum is σ = 455274000. Its totient is φ = 354101440.

The previous prime is 403423003. The next prime is 403423049. The reversal of 403423031 is 130324304.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 403423031 - 2¹⁸ = 403160887 is a prime.

It is a super-2 number, since 2×403423031² = 325500283882453922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 403422994 and 403423012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (403423051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 632006 + ... + 632643.

It is an arithmetic number, because the mean of its divisors is an integer number (56909250).

Almost surely, 2^403423031 is an apocalyptic number.

403423031 is a deficient number, since it is larger than the sum of its proper divisors (51850969).

403423031 is a wasteful number, since it uses less digits than its factorization.

403423031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1264689.

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

The square root of 403423031 is about 20085.3934738655. The cubic root of 403423031 is about 738.9020917518.

Adding to 403423031 its reverse (130324304), we get a palindrome (533747335).

The spelling of 403423031 in words is "four hundred three million, four hundred twenty-three thousand, thirty-one".