343444631 has 2 divisors, whose sum is σ = 343444632. Its totient is φ = 343444630.

The previous prime is 343444597. The next prime is 343444657. The reversal of 343444631 is 136444343.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-343444631 is a prime.

It is a super-2 number, since 2×343444631² = 235908429125452322, which contains 22 as substring.

It is a Sophie Germain prime.

It is equal to p_18470075 and since 343444631 and 18470075 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (343444531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171722315 + 171722316.

It is an arithmetic number, because the mean of its divisors is an integer number (171722316).

Almost surely, 2^343444631 is an apocalyptic number.

343444631 is a deficient number, since it is larger than the sum of its proper divisors (1).

343444631 is an equidigital number, since it uses as much as digits as its factorization.

343444631 is an evil number, because the sum of its binary digits is even.

The product of its digits is 41472, while the sum is 32.

The square root of 343444631 is about 18532.2591984895. The cubic root of 343444631 is about 700.3023394647.

Adding to 343444631 its reverse (136444343), we get a palindrome (479888974).

The spelling of 343444631 in words is "three hundred forty-three million, four hundred forty-four thousand, six hundred thirty-one".