331272345 has 16 divisors (see below), whose sum is σ = 530349120. Its totient is φ = 176574144.

The previous prime is 331272343. The next prime is 331272377. The reversal of 331272345 is 543272133.

It is not a de Polignac number, because 331272345 - 2¹ = 331272343 is a prime.

It is not an unprimeable number, because it can be changed into a prime (331272343) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24426 + ... + 35484.

It is an arithmetic number, because the mean of its divisors is an integer number (33146820).

Almost surely, 2^331272345 is an apocalyptic number.

It is an amenable number.

331272345 is a deficient number, since it is larger than the sum of its proper divisors (199076775).

331272345 is a wasteful number, since it uses less digits than its factorization.

331272345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13064.

The product of its digits is 15120, while the sum is 30.

The square root of 331272345 is about 18200.8885772096. Note that the first 3 decimals coincide. The cubic root of 331272345 is about 691.9293095230.

It can be divided in two parts, 3312 and 72345, that added together give a palindrome (75657).

The spelling of 331272345 in words is "three hundred thirty-one million, two hundred seventy-two thousand, three hundred forty-five".