343145531 has 2 divisors, whose sum is σ = 343145532. Its totient is φ = 343145530.

The previous prime is 343145521. The next prime is 343145549. The reversal of 343145531 is 135541343.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 343145531 - 2¹⁴ = 343129147 is a prime.

It is a super-2 number, since 2×343145531² = 235497710890543922, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 343145494 and 343145503.

It is not a weakly prime, because it can be changed into another prime (343145521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171572765 + 171572766.

It is an arithmetic number, because the mean of its divisors is an integer number (171572766).

Almost surely, 2^343145531 is an apocalyptic number.

343145531 is a deficient number, since it is larger than the sum of its proper divisors (1).

343145531 is an equidigital number, since it uses as much as digits as its factorization.

343145531 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10800, while the sum is 29.

The square root of 343145531 is about 18524.1877284808. The cubic root of 343145531 is about 700.0989866820.

Adding to 343145531 its reverse (135541343), we get a palindrome (478686874).

The spelling of 343145531 in words is "three hundred forty-three million, one hundred forty-five thousand, five hundred thirty-one".