345531145 has 16 divisors (see below), whose sum is σ = 422240832. Its totient is φ = 271373760.

The previous prime is 345531107. The next prime is 345531157. The reversal of 345531145 is 541135543.

It is not a de Polignac number, because 345531145 - 2¹⁷ = 345400073 is a prime.

It is a super-2 number, since 2×345531145² = 238783544330022050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

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, 268674 + ... + 269956.

It is an arithmetic number, because the mean of its divisors is an integer number (26390052).

Almost surely, 2^345531145 is an apocalyptic number.

It is an amenable number.

345531145 is a deficient number, since it is larger than the sum of its proper divisors (76709687).

345531145 is a wasteful number, since it uses less digits than its factorization.

345531145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2232.

The product of its digits is 18000, while the sum is 31.

The square root of 345531145 is about 18588.4680649052. The cubic root of 345531145 is about 701.7176491587.

Adding to 345531145 its reverse (541135543), we get a palindrome (886666688).

The spelling of 345531145 in words is "three hundred forty-five million, five hundred thirty-one thousand, one hundred forty-five".