31304413530 has 144 divisors (see below), whose sum is σ = 93112680024. Its totient is φ = 7252346880.

The previous prime is 31304413507. The next prime is 31304413549. The reversal of 31304413530 is 3531440313.

31304413530 is a `hidden beast` number, since 3 + 1 + 304 + 4 + 1 + 353 + 0 = 666.

It can be written as a sum of positive squares in 12 ways, for example, as 1733140161 + 29571273369 = 41631^2 + 171963^2 .

It is a junction number, because it is equal to n+sod(n) for n = 31304413494 and 31304413503.

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 71 ways as a sum of consecutive naturals, for example, 291840 + ... + 384420.

Almost surely, 2^31304413530 is an apocalyptic number.

31304413530 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 31304413530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46556340012).

31304413530 is an abundant number, since it is smaller than the sum of its proper divisors (61808266494).

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

31304413530 is a wasteful number, since it uses less digits than its factorization.

31304413530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92641 (or 92621 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 27.

Adding to 31304413530 its reverse (3531440313), we get a palindrome (34835853843).

The spelling of 31304413530 in words is "thirty-one billion, three hundred four million, four hundred thirteen thousand, five hundred thirty".