311003345 has 8 divisors (see below), whose sum is σ = 373306920. Its totient is φ = 248734080.

The previous prime is 311003339. The next prime is 311003353. The reversal of 311003345 is 543300113.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 77035729 + 233967616 = 8777^2 + 15296^2 .

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

It is not a de Polignac number, because 311003345 - 2⁶ = 311003281 is a prime.

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 7 ways as a sum of consecutive naturals, for example, 20075 + ... + 32015.

It is an arithmetic number, because the mean of its divisors is an integer number (46663365).

Almost surely, 2^311003345 is an apocalyptic number.

It is an amenable number.

311003345 is a deficient number, since it is larger than the sum of its proper divisors (62303575).

311003345 is a wasteful number, since it uses less digits than its factorization.

311003345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17155.

The product of its (nonzero) digits is 540, while the sum is 20.

The square root of 311003345 is about 17635.2869270676. The cubic root of 311003345 is about 677.5193242583.

Adding to 311003345 its reverse (543300113), we get a palindrome (854303458).

The spelling of 311003345 in words is "three hundred eleven million, three thousand, three hundred forty-five".