431331132 has 12 divisors (see below), whose sum is σ = 1006439336. Its totient is φ = 143777040.

The previous prime is 431331127. The next prime is 431331139. The reversal of 431331132 is 231133134.

It is a tau number, because it is divible by the number of its divisors (12).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 431331099 and 431331108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (431331139) 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 3 ways as a sum of consecutive naturals, for example, 17972119 + ... + 17972142.

Almost surely, 2^431331132 is an apocalyptic number.

It is an amenable number.

431331132 is an abundant number, since it is smaller than the sum of its proper divisors (575108204).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

431331132 is a wasteful number, since it uses less digits than its factorization.

431331132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35944268 (or 35944266 counting only the distinct ones).

The product of its digits is 648, while the sum is 21.

The square root of 431331132 is about 20768.5129944346. The cubic root of 431331132 is about 755.5622798549.

Adding to 431331132 its reverse (231133134), we get a palindrome (662464266).

The spelling of 431331132 in words is "four hundred thirty-one million, three hundred thirty-one thousand, one hundred thirty-two".