30331424 has 12 divisors (see below), whose sum is σ = 59715054. Its totient is φ = 15165696.

The previous prime is 30331409. The next prime is 30331439. The reversal of 30331424 is 42413303.

It is an interprime number because it is at equal distance from previous prime (30331409) and next prime (30331439).

It can be written as a sum of positive squares in only one way, i.e., 19963024 + 10368400 = 4468^2 + 3220^2 .

It is a junction number, because it is equal to n+sod(n) for n = 30331396 and 30331405.

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 as a sum of consecutive naturals, namely, 473897 + ... + 473960.

Almost surely, 2^30331424 is an apocalyptic number.

It is an amenable number.

30331424 is a deficient number, since it is larger than the sum of its proper divisors (29383630).

30331424 is an equidigital number, since it uses as much as digits as its factorization.

30331424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 947867 (or 947859 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 30331424 is about 5507.3972073930. The cubic root of 30331424 is about 311.8632975530.

Adding to 30331424 its reverse (42413303), we get a palindrome (72744727).

The spelling of 30331424 in words is "thirty million, three hundred thirty-one thousand, four hundred twenty-four".