347694604981 has 4 divisors (see below), whose sum is σ = 347700262732. Its totient is φ = 347688947232.

The previous prime is 347694604919. The next prime is 347694604993. The reversal of 347694604981 is 189406496743.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 234603640881 + 113090964100 = 484359^2 + 336290^2 .

It is a cyclic number.

It is not a de Polignac number, because 347694604981 - 2¹³ = 347694596789 is a prime.

It is a super-2 number, since 2×347694604981² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (347634604981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2735670 + ... + 2859943.

It is an arithmetic number, because the mean of its divisors is an integer number (86925065683).

Almost surely, 2^347694604981 is an apocalyptic number.

It is an amenable number.

347694604981 is a deficient number, since it is larger than the sum of its proper divisors (5657751).

347694604981 is an equidigital number, since it uses as much as digits as its factorization.

347694604981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5657750.

The product of its (nonzero) digits is 31352832, while the sum is 61.

The spelling of 347694604981 in words is "three hundred forty-seven billion, six hundred ninety-four million, six hundred four thousand, nine hundred eighty-one".