345409811 has 2 divisors, whose sum is σ = 345409812. Its totient is φ = 345409810.

The previous prime is 345409787. The next prime is 345409819. The reversal of 345409811 is 118904543.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 345409811 - 2⁶ = 345409747 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (345409819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172704905 + 172704906.

It is an arithmetic number, because the mean of its divisors is an integer number (172704906).

Almost surely, 2^345409811 is an apocalyptic number.

345409811 is a deficient number, since it is larger than the sum of its proper divisors (1).

345409811 is an equidigital number, since it uses as much as digits as its factorization.

345409811 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 345409811 is about 18585.2040881988. The cubic root of 345409811 is about 701.6355029919.

The spelling of 345409811 in words is "three hundred forty-five million, four hundred nine thousand, eight hundred eleven".