344217431 has 2 divisors, whose sum is σ = 344217432. Its totient is φ = 344217430.

The previous prime is 344217421. The next prime is 344217437. The reversal of 344217431 is 134712443.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 344217431 - 2²⁶ = 277108567 is a prime.

It is a super-2 number, since 2×344217431² = 236971279608479522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 344217394 and 344217403.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (344217437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172108715 + 172108716.

It is an arithmetic number, because the mean of its divisors is an integer number (172108716).

Almost surely, 2^344217431 is an apocalyptic number.

344217431 is a deficient number, since it is larger than the sum of its proper divisors (1).

344217431 is an equidigital number, since it uses as much as digits as its factorization.

344217431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8064, while the sum is 29.

The square root of 344217431 is about 18553.0976119892. The cubic root of 344217431 is about 700.8272064394.

Adding to 344217431 its reverse (134712443), we get a palindrome (478929874).

The spelling of 344217431 in words is "three hundred forty-four million, two hundred seventeen thousand, four hundred thirty-one".