31204240434 has 24 divisors (see below), whose sum is σ = 67753979280. Its totient is φ = 10379137848.

The previous prime is 31204240399. The next prime is 31204240447. The reversal of 31204240434 is 43404240213.

It is a happy number.

31204240434 is a `hidden beast` number, since 3 + 1 + 204 + 24 + 0 + 434 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 31204240398 and 31204240407.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1847664 + ... + 1864475.

It is an arithmetic number, because the mean of its divisors is an integer number (2823082470).

Almost surely, 2^31204240434 is an apocalyptic number.

31204240434 is an abundant number, since it is smaller than the sum of its proper divisors (36549738846).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31204240434 is a wasteful number, since it uses less digits than its factorization.

31204240434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3712614 (or 3712611 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

Adding to 31204240434 its reverse (43404240213), we get a palindrome (74608480647).

The spelling of 31204240434 in words is "thirty-one billion, two hundred four million, two hundred forty thousand, four hundred thirty-four".