345321469 has 2 divisors, whose sum is σ = 345321470. Its totient is φ = 345321468.

The previous prime is 345321437. The next prime is 345321491. The reversal of 345321469 is 964123543.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 248535225 + 96786244 = 15765^2 + 9838^2 .

It is a cyclic number.

It is not a de Polignac number, because 345321469 - 2⁵ = 345321437 is a prime.

It is a super-2 number, since 2×345321469² = 238493833904635922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (345321269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172660734 + 172660735.

It is an arithmetic number, because the mean of its divisors is an integer number (172660735).

Almost surely, 2^345321469 is an apocalyptic number.

It is an amenable number.

345321469 is a deficient number, since it is larger than the sum of its proper divisors (1).

345321469 is an equidigital number, since it uses as much as digits as its factorization.

345321469 is an evil number, because the sum of its binary digits is even.

The product of its digits is 77760, while the sum is 37.

The square root of 345321469 is about 18582.8272606727. The cubic root of 345321469 is about 701.5756811352.

The spelling of 345321469 in words is "three hundred forty-five million, three hundred twenty-one thousand, four hundred sixty-nine".