30311242 has 16 divisors (see below), whose sum is σ = 50545152. Its totient is φ = 13538160.

The previous prime is 30311227. The next prime is 30311243. The reversal of 30311242 is 24211303.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (30311243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17998 + ... + 19609.

It is an arithmetic number, because the mean of its divisors is an integer number (3159072).

Almost surely, 2^30311242 is an apocalyptic number.

30311242 is a deficient number, since it is larger than the sum of its proper divisors (20233910).

30311242 is a wasteful number, since it uses less digits than its factorization.

30311242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37653.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 30311242 is about 5505.5646395261. The cubic root of 30311242 is about 311.7941127414.

Adding to 30311242 its reverse (24211303), we get a palindrome (54522545).

The spelling of 30311242 in words is "thirty million, three hundred eleven thousand, two hundred forty-two".