80343961 has 4 divisors (see below), whose sum is σ = 80587024. Its totient is φ = 80100900.

The previous prime is 80343943. The next prime is 80343973. The reversal of 80343961 is 16934308.

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.

It is a cyclic number.

It is not a de Polignac number, because 80343961 - 2²¹ = 78246809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80343911) 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, 121035 + ... + 121696.

It is an arithmetic number, because the mean of its divisors is an integer number (20146756).

Almost surely, 2^80343961 is an apocalyptic number.

It is an amenable number.

80343961 is a deficient number, since it is larger than the sum of its proper divisors (243063).

80343961 is a wasteful number, since it uses less digits than its factorization.

80343961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243062.

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 80343961 is about 8963.4792909896. The cubic root of 80343961 is about 431.5035896738.

The spelling of 80343961 in words is "eighty million, three hundred forty-three thousand, nine hundred sixty-one".