31330420404 has 24 divisors (see below), whose sum is σ = 74804415840. Its totient is φ = 10200601824.

The previous prime is 31330420397. The next prime is 31330420411. The reversal of 31330420404 is 40402403313.

It is an interprime number because it is at equal distance from previous prime (31330420397) and next prime (31330420411).

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 30358419 + ... + 30359450.

It is an arithmetic number, because the mean of its divisors is an integer number (3116850660).

Almost surely, 2^31330420404 is an apocalyptic number.

It is an amenable number.

31330420404 is an abundant number, since it is smaller than the sum of its proper divisors (43473995436).

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

31330420404 is a wasteful number, since it uses less digits than its factorization.

31330420404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60717919 (or 60717917 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 24.

Adding to 31330420404 its reverse (40402403313), we get a palindrome (71732823717).

The spelling of 31330420404 in words is "thirty-one billion, three hundred thirty million, four hundred twenty thousand, four hundred four".