311310103 has 16 divisors (see below), whose sum is σ = 357721056. Its totient is φ = 268369920.

The previous prime is 311310101. The next prime is 311310107. The reversal of 311310103 is 301013113.

It is a happy number.

It is not a de Polignac number, because 311310103 - 2¹ = 311310101 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311310101) 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, 23575 + ... + 34327.

It is an arithmetic number, because the mean of its divisors is an integer number (22357566).

Almost surely, 2^311310103 is an apocalyptic number.

311310103 is a deficient number, since it is larger than the sum of its proper divisors (46410953).

311310103 is a wasteful number, since it uses less digits than its factorization.

311310103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10914.

The product of its (nonzero) digits is 27, while the sum is 13.

The square root of 311310103 is about 17643.9820618816. The cubic root of 311310103 is about 677.7420080130.

Adding to 311310103 its reverse (301013113), we get a palindrome (612323216).

The spelling of 311310103 in words is "three hundred eleven million, three hundred ten thousand, one hundred three".