30312056 has 16 divisors (see below), whose sum is σ = 56899800. Its totient is φ = 15138784.

The previous prime is 30312053. The next prime is 30312077. The reversal of 30312056 is 65021303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30312053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8291 + ... + 11373.

Almost surely, 2^30312056 is an apocalyptic number.

It is an amenable number.

30312056 is a deficient number, since it is larger than the sum of its proper divisors (26587744).

30312056 is a wasteful number, since it uses less digits than its factorization.

30312056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4318 (or 4314 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 20.

The square root of 30312056 is about 5505.6385642358. The cubic root of 30312056 is about 311.7969037646.

Adding to 30312056 its reverse (65021303), we get a palindrome (95333359).

The spelling of 30312056 in words is "thirty million, three hundred twelve thousand, fifty-six".