30531116 has 90 divisors (see below), whose sum is σ = 72232188. Its totient is φ = 11195520.

The previous prime is 30531089. The next prime is 30531139. The reversal of 30531116 is 61113503.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 1795940 + ... + 1795956.

Almost surely, 2^30531116 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30531116, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36116094).

30531116 is an abundant number, since it is smaller than the sum of its proper divisors (41701072).

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

30531116 is a wasteful number, since it uses less digits than its factorization.

30531116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77 (or 37 counting only the distinct ones).

The product of its (nonzero) digits is 270, while the sum is 20.

The square root of 30531116 is about 5525.4969007321. The cubic root of 30531116 is about 312.5462024487.

Adding to 30531116 its reverse (61113503), we get a palindrome (91644619).

The spelling of 30531116 in words is "thirty million, five hundred thirty-one thousand, one hundred sixteen".