30311312 has 20 divisors (see below), whose sum is σ = 59312796. Its totient is φ = 15004800.

The previous prime is 30311297. The next prime is 30311329. The reversal of 30311312 is 21311303.

It can be written as a sum of positive squares in 2 ways, for example, as 24760576 + 5550736 = 4976^2 + 2356^2 .

It is a super-2 number, since 2×30311312² = 1837551270322688, which contains 22 as substring.

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 in 3 ways as a sum of consecutive naturals, for example, 7763 + ... + 10994.

Almost surely, 2^30311312 is an apocalyptic number.

It is an amenable number.

30311312 is a deficient number, since it is larger than the sum of its proper divisors (29001484).

30311312 is a wasteful number, since it uses less digits than its factorization.

30311312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18866 (or 18860 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 14.

The square root of 30311312 is about 5505.5709967269. The cubic root of 30311312 is about 311.7943527576.

Adding to 30311312 its reverse (21311303), we get a palindrome (51622615).

Subtracting from 30311312 its reverse (21311303), we obtain a palindrome (9000009).

The spelling of 30311312 in words is "thirty million, three hundred eleven thousand, three hundred twelve".