30431420242 has 16 divisors (see below), whose sum is σ = 46964698200. Its totient is φ = 14779762560.

The previous prime is 30431420213. The next prime is 30431420317. The reversal of 30431420242 is 24202413403.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 29501841121 + 929579121 = 171761^2 + 30489^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 791517 + ... + 829072.

Almost surely, 2^30431420242 is an apocalyptic number.

30431420242 is a deficient number, since it is larger than the sum of its proper divisors (16533277958).

30431420242 is a wasteful number, since it uses less digits than its factorization.

30431420242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1620861.

The product of its (nonzero) digits is 4608, while the sum is 25.

Adding to 30431420242 its reverse (24202413403), we get a palindrome (54633833645).

The spelling of 30431420242 in words is "thirty billion, four hundred thirty-one million, four hundred twenty thousand, two hundred forty-two".