31341321785860 has 12 divisors (see below), whose sum is σ = 65816775750348. Its totient is φ = 12536528714336.

The previous prime is 31341321785831. The next prime is 31341321785867. The reversal of 31341321785860 is 6858712314313.

It can be written as a sum of positive squares in 2 ways, for example, as 14605482610944 + 16735839174916 = 3821712^2 + 4090946^2 .

It is a junction number, because it is equal to n+sod(n) for n = 31341321785798 and 31341321785807.

It is not an unprimeable number, because it can be changed into a prime (31341321785867) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 783533044627 + ... + 783533044666.

It is an arithmetic number, because the mean of its divisors is an integer number (5484731312529).

Almost surely, 2^{31341321785860} is an apocalyptic number.

It is an amenable number.

31341321785860 is an abundant number, since it is smaller than the sum of its proper divisors (34475453964488).

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

31341321785860 is a wasteful number, since it uses less digits than its factorization.

31341321785860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1567066089302 (or 1567066089300 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 52.

The spelling of 31341321785860 in words is "thirty-one trillion, three hundred forty-one billion, three hundred twenty-one million, seven hundred eighty-five thousand, eight hundred sixty".