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12783231383 = 131915148301
BaseRepresentation
bin10111110011111000…
…01010000110010111
31012222212220102211012
423321330022012113
5202140001401013
65512245002435
7631531450106
oct137174120627
935885812735
1012783231383
11546a889a3a
1225890b341b
1312894c6050
14893a6003d
154ec3d41a8
hex2f9f0a197

12783231383 has 8 divisors (see below), whose sum is σ = 13838635776. Its totient is φ = 11738124000.

The previous prime is 12783231353. The next prime is 12783231397. The reversal of 12783231383 is 38313238721.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12783231383 - 212 = 12783227287 is a prime.

It is a super-2 number, since 2×127832313832 (a number of 21 digits) 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 12783231383.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12783231313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2571668 + ... + 2576633.

It is an arithmetic number, because the mean of its divisors is an integer number (1729829472).

Almost surely, 212783231383 is an apocalyptic number.

12783231383 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

12783231383 is a deficient number, since it is larger than the sum of its proper divisors (1055404393).

12783231383 is a wasteful number, since it uses less digits than its factorization.

12783231383 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5148505.

The product of its digits is 145152, while the sum is 41.

The spelling of 12783231383 in words is "twelve billion, seven hundred eighty-three million, two hundred thirty-one thousand, three hundred eighty-three".

Divisors: 1 13 191 2483 5148301 66927913 983325491 12783231383