31433240424 has 64 divisors (see below), whose sum is σ = 80100705600. Its totient is φ = 10275572736.

The previous prime is 31433240417. The next prime is 31433240429. The reversal of 31433240424 is 42404233413.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 31433240391 and 31433240400.

It is not an unprimeable number, because it can be changed into a prime (31433240429) 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 15 ways as a sum of consecutive naturals, for example, 4210407 + ... + 4217865.

It is an arithmetic number, because the mean of its divisors is an integer number (1251573525).

Almost surely, 2^31433240424 is an apocalyptic number.

It is an amenable number.

31433240424 is an abundant number, since it is smaller than the sum of its proper divisors (48667465176).

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

31433240424 is a wasteful number, since it uses less digits than its factorization.

31433240424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10834 (or 10830 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 30.

Adding to 31433240424 its reverse (42404233413), we get a palindrome (73837473837).

The spelling of 31433240424 in words is "thirty-one billion, four hundred thirty-three million, two hundred forty thousand, four hundred twenty-four".