31122421424 has 40 divisors (see below), whose sum is σ = 64077380928. Its totient is φ = 14592936960.

The previous prime is 31122421403. The next prime is 31122421483. The reversal of 31122421424 is 42412422113.

It is a junction number, because it is equal to n+sod(n) for n = 31122421393 and 31122421402.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 131192 + ... + 281879.

Almost surely, 2^31122421424 is an apocalyptic number.

31122421424 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

It is an amenable number.

31122421424 is an abundant number, since it is smaller than the sum of its proper divisors (32954959504).

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

31122421424 is a wasteful number, since it uses less digits than its factorization.

31122421424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 413373 (or 413367 counting only the distinct ones).

The product of its digits is 3072, while the sum is 26.

Adding to 31122421424 its reverse (42412422113), we get a palindrome (73534843537).

The spelling of 31122421424 in words is "thirty-one billion, one hundred twenty-two million, four hundred twenty-one thousand, four hundred twenty-four".