343722161 has 4 divisors (see below), whose sum is σ = 345091824. Its totient is φ = 342352500.

The previous prime is 343722151. The next prime is 343722163. The reversal of 343722161 is 161227343.

It is a happy number.

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: 161227343 = 47 ⋅3430369.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-343722161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (343722163) 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, 684455 + ... + 684956.

It is an arithmetic number, because the mean of its divisors is an integer number (86272956).

Almost surely, 2^343722161 is an apocalyptic number.

It is an amenable number.

343722161 is a deficient number, since it is larger than the sum of its proper divisors (1369663).

343722161 is a wasteful number, since it uses less digits than its factorization.

343722161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1369662.

The product of its digits is 6048, while the sum is 29.

The square root of 343722161 is about 18539.7454405394. The cubic root of 343722161 is about 700.4909216144.

The spelling of 343722161 in words is "three hundred forty-three million, seven hundred twenty-two thousand, one hundred sixty-one".