31116424 has 16 divisors (see below), whose sum is σ = 60880320. Its totient is φ = 14881680.

The previous prime is 31116377. The next prime is 31116427. The reversal of 31116424 is 42461113.

It is a junction number, because it is equal to n+sod(n) for n = 31116395 and 31116404.

It is not an unprimeable number, because it can be changed into a prime (31116427) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 84372 + ... + 84739.

It is an arithmetic number, because the mean of its divisors is an integer number (3805020).

Almost surely, 2^31116424 is an apocalyptic number.

It is an amenable number.

31116424 is a deficient number, since it is larger than the sum of its proper divisors (29763896).

31116424 is a wasteful number, since it uses less digits than its factorization.

31116424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169140 (or 169136 counting only the distinct ones).

The product of its digits is 576, while the sum is 22.

The square root of 31116424 is about 5578.2097486559. The cubic root of 31116424 is about 314.5308342763.

Adding to 31116424 its reverse (42461113), we get a palindrome (73577537).

The spelling of 31116424 in words is "thirty-one million, one hundred sixteen thousand, four hundred twenty-four".