31230304004 has 6 divisors (see below), whose sum is σ = 54653032014. Its totient is φ = 15615152000.

The previous prime is 31230304003. The next prime is 31230304013. The reversal of 31230304004 is 40040303213.

It can be written as a sum of positive squares in only one way, i.e., 19712721604 + 11517582400 = 140402^2 + 107320^2 .

It is not an unprimeable number, because it can be changed into a prime (31230304003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3903787997 + ... + 3903788004.

It is an arithmetic number, because the mean of its divisors is an integer number (9108838669).

Almost surely, 2^31230304004 is an apocalyptic number.

It is an amenable number.

31230304004 is a deficient number, since it is larger than the sum of its proper divisors (23422728010).

31230304004 is a wasteful number, since it uses less digits than its factorization.

31230304004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7807576005 (or 7807576003 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

Adding to 31230304004 its reverse (40040303213), we get a palindrome (71270607217).

The spelling of 31230304004 in words is "thirty-one billion, two hundred thirty million, three hundred four thousand, four".