31104312420 has 24 divisors (see below), whose sum is σ = 87092074944. Its totient is φ = 8294483296.

The previous prime is 31104312403. The next prime is 31104312439. The reversal of 31104312420 is 2421340113.

It is a super-2 number, since 2×31104312420² (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 (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 259202544 + ... + 259202663.

It is an arithmetic number, because the mean of its divisors is an integer number (3628836456).

Almost surely, 2^31104312420 is an apocalyptic number.

31104312420 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

31104312420 is an abundant number, since it is smaller than the sum of its proper divisors (55987762524).

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

31104312420 is a wasteful number, since it uses less digits than its factorization.

31104312420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 518405219 (or 518405217 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 31104312420 its reverse (2421340113), we get a palindrome (33525652533).

The spelling of 31104312420 in words is "thirty-one billion, one hundred four million, three hundred twelve thousand, four hundred twenty".