345131205 has 16 divisors (see below), whose sum is σ = 552626304. Its totient is φ = 183931200.

The previous prime is 345131203. The next prime is 345131207. The reversal of 345131205 is 502131543.

It is an interprime number because it is at equal distance from previous prime (345131203) and next prime (345131207).

It is not a de Polignac number, because 345131205 - 2¹ = 345131203 is a prime.

It is a super-3 number, since 3×345131205³ (a number of 27 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345131203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13755 + ... + 29655.

It is an arithmetic number, because the mean of its divisors is an integer number (34539144).

Almost surely, 2^345131205 is an apocalyptic number.

It is an amenable number.

345131205 is a deficient number, since it is larger than the sum of its proper divisors (207495099).

345131205 is a wasteful number, since it uses less digits than its factorization.

345131205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17356.

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 345131205 is about 18577.7072051424. The cubic root of 345131205 is about 701.4468069021.

Adding to 345131205 its reverse (502131543), we get a palindrome (847262748).

The spelling of 345131205 in words is "three hundred forty-five million, one hundred thirty-one thousand, two hundred five".