30431016 has 144 divisors (see below), whose sum is σ = 103740000. Its totient is φ = 7888320.

The previous prime is 30430973. The next prime is 30431021. The reversal of 30431016 is 61013403.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a self number, because there is not a number n which added to its sum of digits gives 30431016.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 60735 + ... + 61233.

Almost surely, 2^30431016 is an apocalyptic number.

30431016 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30431016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51870000).

30431016 is an abundant number, since it is smaller than the sum of its proper divisors (73308984).

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

30431016 is a wasteful number, since it uses less digits than its factorization.

30431016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 540 (or 522 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 30431016 is about 5516.4314552073. The cubic root of 30431016 is about 312.2042548129.

Adding to 30431016 its reverse (61013403), we get a palindrome (91444419).

The spelling of 30431016 in words is "thirty million, four hundred thirty-one thousand, sixteen".