312204000040 has 16 divisors (see below), whose sum is σ = 702459000180. Its totient is φ = 124881600000.

The previous prime is 312204000037. The next prime is 312204000061. The reversal of 312204000040 is 40000402213.

It can be written as a sum of positive squares in 2 ways, for example, as 283937648164 + 28266351876 = 532858^2 + 168126^2 .

It is a junction number, because it is equal to n+sod(n) for n = 312203999978 and 312204000023.

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 3 ways as a sum of consecutive naturals, for example, 3902549961 + ... + 3902550040.

Almost surely, 2^312204000040 is an apocalyptic number.

It is an amenable number.

312204000040 is an abundant number, since it is smaller than the sum of its proper divisors (390255000140).

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

312204000040 is a wasteful number, since it uses less digits than its factorization.

312204000040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7805100012 (or 7805100008 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

Adding to 312204000040 its reverse (40000402213), we get a palindrome (352204402253).

The spelling of 312204000040 in words is "three hundred twelve billion, two hundred four million, forty", and thus it is an aban number.