343432381 has 2 divisors, whose sum is σ = 343432382. Its totient is φ = 343432380.

The previous prime is 343432373. The next prime is 343432433. The reversal of 343432381 is 183234343.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 339664900 + 3767481 = 18430^2 + 1941^2 .

It is a cyclic number.

It is not a de Polignac number, because 343432381 - 2³ = 343432373 is a prime.

It is a super-2 number, since 2×343432381² = 235891600638658322, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (343432081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171716190 + 171716191.

It is an arithmetic number, because the mean of its divisors is an integer number (171716191).

Almost surely, 2^343432381 is an apocalyptic number.

It is an amenable number.

343432381 is a deficient number, since it is larger than the sum of its proper divisors (1).

343432381 is an equidigital number, since it uses as much as digits as its factorization.

343432381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20736, while the sum is 31.

The square root of 343432381 is about 18531.9286907758. The cubic root of 343432381 is about 700.2940132263.

The spelling of 343432381 in words is "three hundred forty-three million, four hundred thirty-two thousand, three hundred eighty-one".