403234431 has 8 divisors (see below), whose sum is σ = 537747504. Its totient is φ = 268772160.

The previous prime is 403234427. The next prime is 403234451. The reversal of 403234431 is 134432304.

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

It is not a de Polignac number, because 403234431 - 2² = 403234427 is a prime.

It is a super-2 number, since 2×403234431² = 325196012687787522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (403234411) 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, 13611 + ... + 31491.

It is an arithmetic number, because the mean of its divisors is an integer number (67218438).

Almost surely, 2^403234431 is an apocalyptic number.

403234431 is a deficient number, since it is larger than the sum of its proper divisors (134513073).

403234431 is a wasteful number, since it uses less digits than its factorization.

403234431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25401.

The product of its (nonzero) digits is 3456, while the sum is 24.

The square root of 403234431 is about 20080.6979709372. The cubic root of 403234431 is about 738.7869283907.

Adding to 403234431 its reverse (134432304), we get a palindrome (537666735).

The spelling of 403234431 in words is "four hundred three million, two hundred thirty-four thousand, four hundred thirty-one".