345123161 has 8 divisors (see below), whose sum is σ = 357964104. Its totient is φ = 332467200.

The previous prime is 345123157. The next prime is 345123167. The reversal of 345123161 is 161321543.

It can be written as a sum of positive squares in 4 ways, for example, as 238393600 + 106729561 = 15440^2 + 10331^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 345123161 - 2² = 345123157 is a prime.

It is a super-3 number, since 3×345123161³ (a number of 27 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 345123161.

It is not an unprimeable number, because it can be changed into a prime (345123167) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42440 + ... + 49913.

It is an arithmetic number, because the mean of its divisors is an integer number (44745513).

Almost surely, 2^345123161 is an apocalyptic number.

It is an amenable number.

345123161 is a deficient number, since it is larger than the sum of its proper divisors (12840943).

345123161 is a wasteful number, since it uses less digits than its factorization.

345123161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92491.

The product of its digits is 2160, while the sum is 26.

The square root of 345123161 is about 18577.4907078432. The cubic root of 345123161 is about 701.4413573012.

It can be divided in two parts, 34512 and 3161, that added together give a palindrome (37673).

The spelling of 345123161 in words is "three hundred forty-five million, one hundred twenty-three thousand, one hundred sixty-one".