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313868969 = 1991577231
BaseRepresentation
bin10010101101010…
…100001010101001
3210212121012021122
4102231110022221
51120322301334
651051145025
710530561611
oct2255241251
9725535248
10313868969
11151197447
1289145175
13500456ab
142d983a41
151c84d32e
hex12b542a9

313868969 has 4 divisors (see below), whose sum is σ = 315446400. Its totient is φ = 312291540.

The previous prime is 313868957. The next prime is 313869013. The reversal of 313868969 is 969868313.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 313868969 - 28 = 313868713 is a prime.

It is a super-2 number, since 2×3138689692 = 197027459402245922, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 313868969.

It is not an unprimeable number, because it can be changed into a prime (313868369) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 788417 + ... + 788814.

It is an arithmetic number, because the mean of its divisors is an integer number (78861600).

Almost surely, 2313868969 is an apocalyptic number.

It is an amenable number.

313868969 is a deficient number, since it is larger than the sum of its proper divisors (1577431).

313868969 is a wasteful number, since it uses less digits than its factorization.

313868969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1577430.

The product of its digits is 1679616, while the sum is 53.

The square root of 313868969 is about 17716.3475073165. The cubic root of 313868969 is about 679.5938816360.

The spelling of 313868969 in words is "three hundred thirteen million, eight hundred sixty-eight thousand, nine hundred sixty-nine".

Divisors: 1 199 1577231 313868969