347713242521 has 2 divisors, whose sum is σ = 347713242522. Its totient is φ = 347713242520.

The previous prime is 347713242463. The next prime is 347713242581. The reversal of 347713242521 is 125242317743.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 315254175625 + 32459066896 = 561475^2 + 180164^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-347713242521 is a prime.

It is not a weakly prime, because it can be changed into another prime (347713242581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 173856621260 + 173856621261.

It is an arithmetic number, because the mean of its divisors is an integer number (173856621261).

Almost surely, 2^347713242521 is an apocalyptic number.

It is an amenable number.

347713242521 is a deficient number, since it is larger than the sum of its proper divisors (1).

347713242521 is an equidigital number, since it uses as much as digits as its factorization.

347713242521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 282240, while the sum is 41.

The spelling of 347713242521 in words is "three hundred forty-seven billion, seven hundred thirteen million, two hundred forty-two thousand, five hundred twenty-one".