30431056 has 20 divisors (see below), whose sum is σ = 59504500. Its totient is φ = 15075072.

The previous prime is 30431021. The next prime is 30431059. The reversal of 30431056 is 65013403.

It can be written as a sum of positive squares in 2 ways, for example, as 27248400 + 3182656 = 5220^2 + 1784^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30431059) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 6981 + ... + 10468.

It is an arithmetic number, because the mean of its divisors is an integer number (2975225).

Almost surely, 2^30431056 is an apocalyptic number.

It is an amenable number.

30431056 is a deficient number, since it is larger than the sum of its proper divisors (29073444).

30431056 is a wasteful number, since it uses less digits than its factorization.

30431056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17566 (or 17560 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 30431056 is about 5516.4350807383. The cubic root of 30431056 is about 312.2043916050.

Adding to 30431056 its reverse (65013403), we get a palindrome (95444459).

The spelling of 30431056 in words is "thirty million, four hundred thirty-one thousand, fifty-six".