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311310103 = 131713110753
BaseRepresentation
bin10010100011100…
…011011100010111
3210200210012011211
4102203203130113
51114143410403
650520242251
710500043426
oct2243433427
9720705154
10311310103
1114a7a9985
1288310387
134c65aa80
142d4b92bd
151c4e506d
hex128e3717

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, 2311310103 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".