341000021 has 2 divisors, whose sum is σ = 341000022. Its totient is φ = 341000020.

The previous prime is 340999961. The next prime is 341000027. The reversal of 341000021 is 120000143.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 310252996 + 30747025 = 17614^2 + 5545^2 .

It is a cyclic number.

It is not a de Polignac number, because 341000021 - 2¹⁸ = 340737877 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 340999966 and 341000011.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (341000027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170500010 + 170500011.

It is an arithmetic number, because the mean of its divisors is an integer number (170500011).

Almost surely, 2^341000021 is an apocalyptic number.

It is an amenable number.

341000021 is a deficient number, since it is larger than the sum of its proper divisors (1).

341000021 is an equidigital number, since it uses as much as digits as its factorization.

341000021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 341000021 is about 18466.1858812263. The cubic root of 341000021 is about 698.6368171233.

Adding to 341000021 its reverse (120000143), we get a palindrome (461000164).

The spelling of 341000021 in words is "three hundred forty-one million, twenty-one", and thus it is an aban number.