347571347421 has 4 divisors (see below), whose sum is σ = 463428463232. Its totient is φ = 231714231612.

The previous prime is 347571347407. The next prime is 347571347429. The reversal of 347571347421 is 124743175743.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 124743175743 = 3 ⋅41581058581.

It is not a de Polignac number, because 347571347421 - 2³⁴ = 330391478237 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (347571347429) 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, 57928557901 + ... + 57928557906.

It is an arithmetic number, because the mean of its divisors is an integer number (115857115808).

Almost surely, 2^347571347421 is an apocalyptic number.

It is an amenable number.

347571347421 is a deficient number, since it is larger than the sum of its proper divisors (115857115811).

347571347421 is a wasteful number, since it uses less digits than its factorization.

347571347421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115857115810.

The product of its digits is 1975680, while the sum is 48.

The spelling of 347571347421 in words is "three hundred forty-seven billion, five hundred seventy-one million, three hundred forty-seven thousand, four hundred twenty-one".