31432121212224 has 28 divisors (see below), whose sum is σ = 83164154041184. Its totient is φ = 10477373737344.

The previous prime is 31432121212199. The next prime is 31432121212237. The reversal of 31432121212224 is 42221212123413.

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 = 31432121212191 and 31432121212200.

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, 81854482132 + ... + 81854482515.

Almost surely, 2^{31432121212224} is an apocalyptic number.

It is an amenable number.

31432121212224 is an abundant number, since it is smaller than the sum of its proper divisors (51732032828960).

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

31432121212224 is a wasteful number, since it uses less digits than its factorization.

31432121212224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163708964662 (or 163708964652 counting only the distinct ones).

The product of its digits is 9216, while the sum is 30.

Adding to 31432121212224 its reverse (42221212123413), we get a palindrome (73653333335637).

The spelling of 31432121212224 in words is "thirty-one trillion, four hundred thirty-two billion, one hundred twenty-one million, two hundred twelve thousand, two hundred twenty-four".