30431304 has 24 divisors (see below), whose sum is σ = 82418310. Its totient is φ = 10143744.

The previous prime is 30431299. The next prime is 30431321. The reversal of 30431304 is 40313403.

It can be written as a sum of positive squares in only one way, i.e., 19342404 + 11088900 = 4398^2 + 3330^2 .

It is a tau number, because it is divible by the number of its divisors (24).

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

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 211257 + ... + 211400.

Almost surely, 2^30431304 is an apocalyptic number.

It is an amenable number.

30431304 is an abundant number, since it is smaller than the sum of its proper divisors (51987006).

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

30431304 is a wasteful number, since it uses less digits than its factorization.

30431304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 422669 (or 422662 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 30431304 is about 5516.4575589775. The cubic root of 30431304 is about 312.2052397131.

Adding to 30431304 its reverse (40313403), we get a palindrome (70744707).

The spelling of 30431304 in words is "thirty million, four hundred thirty-one thousand, three hundred four".