30161312 has 12 divisors (see below), whose sum is σ = 59380146. Its totient is φ = 15080640.

The previous prime is 30161279. The next prime is 30161333. The reversal of 30161312 is 21316103.

It can be written as a sum of positive squares in only one way, i.e., 29637136 + 524176 = 5444^2 + 724^2 .

It is a super-3 number, since 3×30161312³ (a number of 23 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

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, 471239 + ... + 471302.

Almost surely, 2^30161312 is an apocalyptic number.

30161312 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

30161312 is a deficient number, since it is larger than the sum of its proper divisors (29218834).

30161312 is an equidigital number, since it uses as much as digits as its factorization.

30161312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 942551 (or 942543 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 30161312 is about 5491.9315363540. The cubic root of 30161312 is about 311.2791819007.

Adding to 30161312 its reverse (21316103), we get a palindrome (51477415).

The spelling of 30161312 in words is "thirty million, one hundred sixty-one thousand, three hundred twelve".