30012311 has 4 divisors (see below), whose sum is σ = 34299792. Its totient is φ = 25724832.

The previous prime is 30012299. The next prime is 30012379. The reversal of 30012311 is 11321003.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 30012311 - 2¹⁸ = 29750167 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30012292 and 30012301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30012391) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2143730 + ... + 2143743.

It is an arithmetic number, because the mean of its divisors is an integer number (8574948).

Almost surely, 2^30012311 is an apocalyptic number.

30012311 is a deficient number, since it is larger than the sum of its proper divisors (4287481).

30012311 is an equidigital number, since it uses as much as digits as its factorization.

30012311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4287480.

The product of its (nonzero) digits is 18, while the sum is 11.

The square root of 30012311 is about 5478.3492951801. The cubic root of 30012311 is about 310.7657482709.

Adding to 30012311 its reverse (11321003), we get a palindrome (41333314).

The spelling of 30012311 in words is "thirty million, twelve thousand, three hundred eleven".