343903631 has 2 divisors, whose sum is σ = 343903632. Its totient is φ = 343903630.

The previous prime is 343903627. The next prime is 343903699. The reversal of 343903631 is 136309343.

It is a weak prime.

It is an emirp because it is prime and its reverse (136309343) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 343903631 - 2² = 343903627 is a prime.

It is a super-2 number, since 2×343903631² = 236539414829968322, 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 (343903621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171951815 + 171951816.

It is an arithmetic number, because the mean of its divisors is an integer number (171951816).

Almost surely, 2^343903631 is an apocalyptic number.

343903631 is a deficient number, since it is larger than the sum of its proper divisors (1).

343903631 is an equidigital number, since it uses as much as digits as its factorization.

343903631 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17496, while the sum is 32.

The square root of 343903631 is about 18544.6388748878. The cubic root of 343903631 is about 700.6141759340.

The spelling of 343903631 in words is "three hundred forty-three million, nine hundred three thousand, six hundred thirty-one".