311345003 has 2 divisors, whose sum is σ = 311345004. Its totient is φ = 311345002.

The previous prime is 311344993. The next prime is 311345053. The reversal of 311345003 is 300543113.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 311345003 - 2¹⁰ = 311343979 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (311345053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155672501 + 155672502.

It is an arithmetic number, because the mean of its divisors is an integer number (155672502).

Almost surely, 2^311345003 is an apocalyptic number.

311345003 is a deficient number, since it is larger than the sum of its proper divisors (1).

311345003 is an equidigital number, since it uses as much as digits as its factorization.

311345003 is an evil number, because the sum of its binary digits is even.

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

The square root of 311345003 is about 17644.9710399309. The cubic root of 311345003 is about 677.7673335775.

Adding to 311345003 its reverse (300543113), we get a palindrome (611888116).

The spelling of 311345003 in words is "three hundred eleven million, three hundred forty-five thousand, three".