312404042020340 has 24 divisors (see below), whose sum is σ = 657807331390440. Its totient is φ = 124626599065728.

The previous prime is 312404042020331. The next prime is 312404042020429. The reversal of 312404042020340 is 43020240404213.

It can be written as a sum of positive squares in 4 ways, for example, as 30387303451024 + 282016738569316 = 5512468^2 + 16793354^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20938601255 + ... + 20938616174.

It is an arithmetic number, because the mean of its divisors is an integer number (27408638807935).

Almost surely, 2^{312404042020340} is an apocalyptic number.

It is an amenable number.

312404042020340 is an abundant number, since it is smaller than the sum of its proper divisors (345403289370100).

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

312404042020340 is a wasteful number, since it uses less digits than its factorization.

312404042020340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41877217811 (or 41877217809 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 29.

Adding to 312404042020340 its reverse (43020240404213), we get a palindrome (355424282424553).

The spelling of 312404042020340 in words is "three hundred twelve trillion, four hundred four billion, forty-two million, twenty thousand, three hundred forty".