31554430006 has 32 divisors (see below), whose sum is σ = 54368939520. Its totient is φ = 13583829600.

The previous prime is 31554430003. The next prime is 31554430013. The reversal of 31554430006 is 60003445513.

It is a self number, because there is not a number n which added to its sum of digits gives 31554430006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31554430003) 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 in 15 ways as a sum of consecutive naturals, for example, 1610851 + ... + 1630321.

It is an arithmetic number, because the mean of its divisors is an integer number (1699029360).

Almost surely, 2^31554430006 is an apocalyptic number.

31554430006 is a deficient number, since it is larger than the sum of its proper divisors (22814509514).

31554430006 is a wasteful number, since it uses less digits than its factorization.

31554430006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23380.

The product of its (nonzero) digits is 21600, while the sum is 31.

Adding to 31554430006 its reverse (60003445513), we get a palindrome (91557875519).

The spelling of 31554430006 in words is "thirty-one billion, five hundred fifty-four million, four hundred thirty thousand, six".