331340145 has 16 divisors (see below), whose sum is σ = 558047040. Its totient is φ = 167413824.

The previous prime is 331340123. The next prime is 331340171. The reversal of 331340145 is 541043133.

It is a happy number.

It is not a de Polignac number, because 331340145 - 2⁷ = 331340017 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 581014 + ... + 581583.

It is an arithmetic number, because the mean of its divisors is an integer number (34877940).

Almost surely, 2^331340145 is an apocalyptic number.

It is an amenable number.

331340145 is a deficient number, since it is larger than the sum of its proper divisors (226706895).

331340145 is a wasteful number, since it uses less digits than its factorization.

331340145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1162624.

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 331340145 is about 18202.7510283473. The cubic root of 331340145 is about 691.9765109750.

Adding to 331340145 its reverse (541043133), we get a palindrome (872383278).

The spelling of 331340145 in words is "three hundred thirty-one million, three hundred forty thousand, one hundred forty-five".