312000400200040 has 64 divisors (see below), whose sum is σ = 702673882796160. Its totient is φ = 124680560259840.

The previous prime is 312000400200031. The next prime is 312000400200059. The reversal of 312000400200040 is 40002004000213.

It is a junction number, because it is equal to n+sod(n) for n = 312000400199987 and 312000400200023.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 241094959 + ... + 242385601.

It is an arithmetic number, because the mean of its divisors is an integer number (10979279418690).

Almost surely, 2^{312000400200040} is an apocalyptic number.

It is an amenable number.

312000400200040 is an abundant number, since it is smaller than the sum of its proper divisors (390673482596120).

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

312000400200040 is a wasteful number, since it uses less digits than its factorization.

312000400200040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1296442 (or 1296438 counting only the distinct ones).

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

Adding to 312000400200040 its reverse (40002004000213), we get a palindrome (352002404200253).

The spelling of 312000400200040 in words is "three hundred twelve trillion, four hundred million, two hundred thousand, forty".