345130081 has 2 divisors, whose sum is σ = 345130082. Its totient is φ = 345130080.

The previous prime is 345130067. The next prime is 345130129. The reversal of 345130081 is 180031543.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 317409856 + 27720225 = 17816^2 + 5265^2 .

It is an emirp because it is prime and its reverse (180031543) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 345130081 - 2⁹ = 345129569 is a prime.

It is a super-3 number, since 3×345130081³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (345130021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172565040 + 172565041.

It is an arithmetic number, because the mean of its divisors is an integer number (172565041).

Almost surely, 2^345130081 is an apocalyptic number.

It is an amenable number.

345130081 is a deficient number, since it is larger than the sum of its proper divisors (1).

345130081 is an equidigital number, since it uses as much as digits as its factorization.

345130081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 345130081 is about 18577.6769538067. The cubic root of 345130081 is about 701.4460454264.

The spelling of 345130081 in words is "three hundred forty-five million, one hundred thirty thousand, eighty-one".