312311442205240 has 32 divisors (see below), whose sum is σ = 703636431773760. Its totient is φ = 124758232560000.

The previous prime is 312311442205199. The next prime is 312311442205241. The reversal of 312311442205240 is 42502244113213.

It is a junction number, because it is equal to n+sod(n) for n = 312311442205196 and 312311442205205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312311442205241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5198229651 + ... + 5198289730.

It is an arithmetic number, because the mean of its divisors is an integer number (21988638492930).

Almost surely, 2^{312311442205240} is an apocalyptic number.

It is an amenable number.

312311442205240 is an abundant number, since it is smaller than the sum of its proper divisors (391324989568520).

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

312311442205240 is a wasteful number, since it uses less digits than its factorization.

312311442205240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10396520143 (or 10396520139 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 34.

Adding to 312311442205240 its reverse (42502244113213), we get a palindrome (354813686318453).

The spelling of 312311442205240 in words is "three hundred twelve trillion, three hundred eleven billion, four hundred forty-two million, two hundred five thousand, two hundred forty".