403312231 has 8 divisors (see below), whose sum is σ = 461250944. Its totient is φ = 345454200.

The previous prime is 403312229. The next prime is 403312237. The reversal of 403312231 is 132213304.

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

It is not a de Polignac number, because 403312231 - 2¹ = 403312229 is a prime.

It is a super-2 number, since 2×403312231² = 325321511348394722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 403312199 and 403312208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (403312237) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9045 + ... + 29806.

It is an arithmetic number, because the mean of its divisors is an integer number (57656368).

Almost surely, 2^403312231 is an apocalyptic number.

403312231 is a deficient number, since it is larger than the sum of its proper divisors (57938713).

403312231 is a wasteful number, since it uses less digits than its factorization.

403312231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40341.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 403312231 is about 20082.6350611666. The cubic root of 403312231 is about 738.8344391540.

Adding to 403312231 its reverse (132213304), we get a palindrome (535525535).

The spelling of 403312231 in words is "four hundred three million, three hundred twelve thousand, two hundred thirty-one".