312131324322140 has 48 divisors (see below), whose sum is σ = 665263378940832. Its totient is φ = 122988249897216.

The previous prime is 312131324322107. The next prime is 312131324322163. The reversal of 312131324322140 is 41223423131213.

It is a junction number, because it is equal to n+sod(n) for n = 312131324322097 and 312131324322106.

It is a congruent number.

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, 228562394 + ... + 229923966.

It is an arithmetic number, because the mean of its divisors is an integer number (13859653727934).

Almost surely, 2^{312131324322140} is an apocalyptic number.

It is an amenable number.

312131324322140 is an abundant number, since it is smaller than the sum of its proper divisors (353132054618692).

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

312131324322140 is a wasteful number, since it uses less digits than its factorization.

312131324322140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1532726 (or 1532724 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 32.

Adding to 312131324322140 its reverse (41223423131213), we get a palindrome (353354747453353).

The spelling of 312131324322140 in words is "three hundred twelve trillion, one hundred thirty-one billion, three hundred twenty-four million, three hundred twenty-two thousand, one hundred forty".