343105031 has 2 divisors, whose sum is σ = 343105032. Its totient is φ = 343105030.

The previous prime is 343105027. The next prime is 343105109. The reversal of 343105031 is 130501343.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 343105031 - 2² = 343105027 is a prime.

It is a super-2 number, since 2×343105031² = 235442124595021922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 343104994 and 343105012.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (343105331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171552515 + 171552516.

It is an arithmetic number, because the mean of its divisors is an integer number (171552516).

Almost surely, 2^343105031 is an apocalyptic number.

343105031 is a deficient number, since it is larger than the sum of its proper divisors (1).

343105031 is an equidigital number, since it uses as much as digits as its factorization.

343105031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 540, while the sum is 20.

The square root of 343105031 is about 18523.0945308823. The cubic root of 343105031 is about 700.0714423682.

Adding to 343105031 its reverse (130501343), we get a palindrome (473606374).

The spelling of 343105031 in words is "three hundred forty-three million, one hundred five thousand, thirty-one".