345142165 has 4 divisors (see below), whose sum is σ = 414170604. Its totient is φ = 276113728.

The previous prime is 345142139. The next prime is 345142169. The reversal of 345142165 is 561241543.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 561241543 = 5003 ⋅112181.

It can be written as a sum of positive squares in 2 ways, for example, as 124411716 + 220730449 = 11154^2 + 14857^2 .

It is a cyclic number.

It is not a de Polignac number, because 345142165 - 2⁹ = 345141653 is a prime.

It is a super-2 number, since 2×345142165² = 238246228121774450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345142169) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34514212 + ... + 34514221.

It is an arithmetic number, because the mean of its divisors is an integer number (103542651).

Almost surely, 2^345142165 is an apocalyptic number.

It is an amenable number.

345142165 is a deficient number, since it is larger than the sum of its proper divisors (69028439).

345142165 is an equidigital number, since it uses as much as digits as its factorization.

345142165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69028438.

The product of its digits is 14400, while the sum is 31.

The square root of 345142165 is about 18578.0021799977. The cubic root of 345142165 is about 701.4542318808.

The spelling of 345142165 in words is "three hundred forty-five million, one hundred forty-two thousand, one hundred sixty-five".