344212381 has 2 divisors, whose sum is σ = 344212382. Its totient is φ = 344212380.

The previous prime is 344212367. The next prime is 344212399. The reversal of 344212381 is 183212443.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 223981156 + 120231225 = 14966^2 + 10965^2 .

It is an emirp because it is prime and its reverse (183212443) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 344212381 - 2²³ = 335823773 is a prime.

It is a super-2 number, since 2×344212381² = 236964326467378322, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (344212361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172106190 + 172106191.

It is an arithmetic number, because the mean of its divisors is an integer number (172106191).

Almost surely, 2^344212381 is an apocalyptic number.

It is an amenable number.

344212381 is a deficient number, since it is larger than the sum of its proper divisors (1).

344212381 is an equidigital number, since it uses as much as digits as its factorization.

344212381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4608, while the sum is 28.

The square root of 344212381 is about 18552.9615156179. The cubic root of 344212381 is about 700.8237791535.

The spelling of 344212381 in words is "three hundred forty-four million, two hundred twelve thousand, three hundred eighty-one".