403143231 has 8 divisors (see below), whose sum is σ = 552052144. Its totient is φ = 261498240.

The previous prime is 403143227. The next prime is 403143233. The reversal of 403143231 is 132341304.

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

It is not a de Polignac number, because 403143231 - 2² = 403143227 is a prime.

It is a super-2 number, since 2×403143231² = 325048929402238722, 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 = 403143198 and 403143207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (403143233) 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, 1815850 + ... + 1816071.

It is an arithmetic number, because the mean of its divisors is an integer number (69006518).

Almost surely, 2^403143231 is an apocalyptic number.

403143231 is a deficient number, since it is larger than the sum of its proper divisors (148908913).

403143231 is a wasteful number, since it uses less digits than its factorization.

403143231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3631961.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 403143231 is about 20078.4270051217. The cubic root of 403143231 is about 738.7312267583.

Adding to 403143231 its reverse (132341304), we get a palindrome (535484535).

The spelling of 403143231 in words is "four hundred three million, one hundred forty-three thousand, two hundred thirty-one".