347717221385 has 12 divisors (see below), whose sum is σ = 422609342148. Its totient is φ = 274652565408.

The previous prime is 347717221367. The next prime is 347717221409. The reversal of 347717221385 is 583122717743.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 215485353616 + 132231867769 = 464204^2 + 363637^2 .

It is not a de Polignac number, because 347717221385 - 2²⁶ = 347650112521 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5540294 + ... + 5602703.

It is an arithmetic number, because the mean of its divisors is an integer number (35217445179).

Almost surely, 2^347717221385 is an apocalyptic number.

It is an amenable number.

347717221385 is a deficient number, since it is larger than the sum of its proper divisors (74892120763).

347717221385 is an equidigital number, since it uses as much as digits as its factorization.

347717221385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11143160 (or 11143081 counting only the distinct ones).

The product of its digits is 1975680, while the sum is 50.

The spelling of 347717221385 in words is "three hundred forty-seven billion, seven hundred seventeen million, two hundred twenty-one thousand, three hundred eighty-five".