31424217104 has 80 divisors (see below), whose sum is σ = 70667762688. Its totient is φ = 13258982016.

The previous prime is 31424217053. The next prime is 31424217131. The reversal of 31424217104 is 40171242413.

It is a super-2 number, since 2×31424217104² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1945349 + ... + 1961435.

Almost surely, 2^31424217104 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 31424217104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35333881344).

31424217104 is an abundant number, since it is smaller than the sum of its proper divisors (39243545584).

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

31424217104 is a wasteful number, since it uses less digits than its factorization.

31424217104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16372 (or 16366 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 29.

Adding to 31424217104 its reverse (40171242413), we get a palindrome (71595459517).

The spelling of 31424217104 in words is "thirty-one billion, four hundred twenty-four million, two hundred seventeen thousand, one hundred four".