Search a number
-
+
8311388107 = 113797121031
BaseRepresentation
bin1111011110110010…
…11011011111001011
3210110020100021002011
413233121123133023
5114010203404412
63452421520351
7412651430131
oct75731333713
923406307064
108311388107
11358561a9a0
12173b5730b7
13a25bca539
1458bba3751
15339a087a7
hex1ef65b7cb

8311388107 has 16 divisors (see below), whose sum is σ = 9322055424. Its totient is φ = 7343676000.

The previous prime is 8311388003. The next prime is 8311388119. The reversal of 8311388107 is 7018831138.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 8311388107 - 223 = 8302999499 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8311388107.

It is not an unprimeable number, because it can be changed into a prime (8311388147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 384682 + ... + 405712.

It is an arithmetic number, because the mean of its divisors is an integer number (582628464).

Almost surely, 28311388107 is an apocalyptic number.

8311388107 is a deficient number, since it is larger than the sum of its proper divisors (1010667317).

8311388107 is a wasteful number, since it uses less digits than its factorization.

8311388107 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22050.

The product of its (nonzero) digits is 32256, while the sum is 40.

The square root of 8311388107 is about 91166.8147244380. The cubic root of 8311388107 is about 2025.6194300319.

The spelling of 8311388107 in words is "eight billion, three hundred eleven million, three hundred eighty-eight thousand, one hundred seven".

Divisors: 1 11 37 407 971 10681 21031 35927 231341 395197 778147 8559617 20421101 224632111 755580737 8311388107