31432344432 has 20 divisors (see below), whose sum is σ = 81200223240. Its totient is φ = 10477448128.

The previous prime is 31432344421. The next prime is 31432344457. The reversal of 31432344432 is 23444323413.

It is a happy number.

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 = 31432344393 and 31432344402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 327420207 + ... + 327420302.

It is an arithmetic number, because the mean of its divisors is an integer number (4060011162).

Almost surely, 2^31432344432 is an apocalyptic number.

It is an amenable number.

31432344432 is an abundant number, since it is smaller than the sum of its proper divisors (49767878808).

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

31432344432 is a wasteful number, since it uses less digits than its factorization.

31432344432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 654840520 (or 654840514 counting only the distinct ones).

The product of its digits is 82944, while the sum is 33.

Adding to 31432344432 its reverse (23444323413), we get a palindrome (54876667845).

The spelling of 31432344432 in words is "thirty-one billion, four hundred thirty-two million, three hundred forty-four thousand, four hundred thirty-two".