431130555 has 12 divisors (see below), whose sum is σ = 747293040. Its totient is φ = 229936272.

The previous prime is 431130551. The next prime is 431130587. The reversal of 431130555 is 555031134.

It is not a de Polignac number, because 431130555 - 2² = 431130551 is a prime.

It is not an unprimeable number, because it can be changed into a prime (431130551) 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 11 ways as a sum of consecutive naturals, for example, 4790295 + ... + 4790384.

It is an arithmetic number, because the mean of its divisors is an integer number (62274420).

Almost surely, 2^431130555 is an apocalyptic number.

431130555 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

431130555 is a deficient number, since it is larger than the sum of its proper divisors (316162485).

431130555 is a wasteful number, since it uses less digits than its factorization.

431130555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9580690 (or 9580687 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 27.

The square root of 431130555 is about 20763.6835604861. The cubic root of 431130555 is about 755.4451448580.

Adding to 431130555 its reverse (555031134), we get a palindrome (986161689).

The spelling of 431130555 in words is "four hundred thirty-one million, one hundred thirty thousand, five hundred fifty-five".