344354981 has 2 divisors, whose sum is σ = 344354982. Its totient is φ = 344354980.

The previous prime is 344354971. The next prime is 344355007. The reversal of 344354981 is 189453443.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 189750625 + 154604356 = 13775^2 + 12434^2 .

It is a cyclic number.

It is not a de Polignac number, because 344354981 - 2²² = 340160677 is a prime.

It is a super-2 number, since 2×344354981² = 237160705879020722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (344354911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172177490 + 172177491.

It is an arithmetic number, because the mean of its divisors is an integer number (172177491).

Almost surely, 2^344354981 is an apocalyptic number.

It is an amenable number.

344354981 is a deficient number, since it is larger than the sum of its proper divisors (1).

344354981 is an equidigital number, since it uses as much as digits as its factorization.

344354981 is an evil number, because the sum of its binary digits is even.

The product of its digits is 207360, while the sum is 41.

The square root of 344354981 is about 18556.8041698995. The cubic root of 344354981 is about 700.9205446766.

The spelling of 344354981 in words is "three hundred forty-four million, three hundred fifty-four thousand, nine hundred eighty-one".