31447538773345 has 16 divisors (see below), whose sum is σ = 38219127840000. Its totient is φ = 24836716764288.

The previous prime is 31447538773327. The next prime is 31447538773397. The reversal of 31447538773345 is 54337783574413.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31447538773345 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1139940 + ... + 8012149.

It is an arithmetic number, because the mean of its divisors is an integer number (2388695490000).

Almost surely, 2^{31447538773345} is an apocalyptic number.

It is an amenable number.

31447538773345 is a deficient number, since it is larger than the sum of its proper divisors (6771589066655).

31447538773345 is an equidigital number, since it uses as much as digits as its factorization.

31447538773345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9160872.

The product of its digits is 355622400, while the sum is 64.

The spelling of 31447538773345 in words is "thirty-one trillion, four hundred forty-seven billion, five hundred thirty-eight million, seven hundred seventy-three thousand, three hundred forty-five".