431140403 has 8 divisors (see below), whose sum is σ = 441466608. Its totient is φ = 420827904.

The previous prime is 431140279. The next prime is 431140421. The reversal of 431140403 is 304041134.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 431140403 - 2⁸ = 431140147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (431140483) 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, 90251 + ... + 94907.

It is an arithmetic number, because the mean of its divisors is an integer number (55183326).

Almost surely, 2^431140403 is an apocalyptic number.

431140403 is a gapful number since it is divisible by the number (43) formed by its first and last digit.

431140403 is a deficient number, since it is larger than the sum of its proper divisors (10326205).

431140403 is a wasteful number, since it uses less digits than its factorization.

431140403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6853.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 431140403 is about 20763.9207039518. The cubic root of 431140403 is about 755.4508968412.

Adding to 431140403 its reverse (304041134), we get a palindrome (735181537).

The spelling of 431140403 in words is "four hundred thirty-one million, one hundred forty thousand, four hundred three".