431031432 has 64 divisors (see below), whose sum is σ = 1163393280. Its totient is φ = 132291072.

The previous prime is 431031427. The next prime is 431031439. The reversal of 431031432 is 234130134.

It is a junction number, because it is equal to n+sod(n) for n = 431031399 and 431031408.

It is not an unprimeable number, because it can be changed into a prime (431031439) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 141073 + ... + 144095.

It is an arithmetic number, because the mean of its divisors is an integer number (18178020).

Almost surely, 2^431031432 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 431031432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (581696640).

431031432 is an abundant number, since it is smaller than the sum of its proper divisors (732361848).

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

431031432 is a wasteful number, since it uses less digits than its factorization.

431031432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3502 (or 3498 counting only the distinct ones).

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

The square root of 431031432 is about 20761.2964913081. The cubic root of 431031432 is about 755.3872445865.

Adding to 431031432 its reverse (234130134), we get a palindrome (665161566).

The spelling of 431031432 in words is "four hundred thirty-one million, thirty-one thousand, four hundred thirty-two".