345041531 has 2 divisors, whose sum is σ = 345041532. Its totient is φ = 345041530.

The previous prime is 345041479. The next prime is 345041533. The reversal of 345041531 is 135140543.

It is a strong prime.

It is an emirp because it is prime and its reverse (135140543) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 345041531 - 2⁶ = 345041467 is a prime.

It is a super-2 number, since 2×345041531² = 238107316229647922, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 345041533, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 345041531.

It is not a weakly prime, because it can be changed into another prime (345041533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172520765 + 172520766.

It is an arithmetic number, because the mean of its divisors is an integer number (172520766).

Almost surely, 2^345041531 is an apocalyptic number.

345041531 is a deficient number, since it is larger than the sum of its proper divisors (1).

345041531 is an equidigital number, since it uses as much as digits as its factorization.

345041531 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 345041531 is about 18575.2935643020. The cubic root of 345041531 is about 701.3860503080.

The spelling of 345041531 in words is "three hundred forty-five million, forty-one thousand, five hundred thirty-one".