345881801 has 2 divisors, whose sum is σ = 345881802. Its totient is φ = 345881800.

The previous prime is 345881771. The next prime is 345881803. The reversal of 345881801 is 108188543.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 214183225 + 131698576 = 14635^2 + 11476^2 .

It is a cyclic number.

It is not a de Polignac number, because 345881801 - 2⁶ = 345881737 is a prime.

Together with 345881803, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (345881803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172940900 + 172940901.

It is an arithmetic number, because the mean of its divisors is an integer number (172940901).

Almost surely, 2^345881801 is an apocalyptic number.

It is an amenable number.

345881801 is a deficient number, since it is larger than the sum of its proper divisors (1).

345881801 is an equidigital number, since it uses as much as digits as its factorization.

345881801 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30720, while the sum is 38.

The square root of 345881801 is about 18597.8977575424. The cubic root of 345881801 is about 701.9549440378.

The spelling of 345881801 in words is "three hundred forty-five million, eight hundred eighty-one thousand, eight hundred one".