Search a number
-
+
31839666341 = 722931722791
BaseRepresentation
bin11101101001110010…
…101100000010100101
310001011221221122011112
4131221302230002211
51010201423310331
622343230314405
72205005461400
oct355162540245
9101157848145
1031839666341
111255973063a
126207058a05
133005562b72
1417808c8d37
15c653ba32b
hex769cac0a5

31839666341 has 24 divisors (see below), whose sum is σ = 39551178240. Its totient is φ = 25500031200.

The previous prime is 31839666317. The next prime is 31839666371. The reversal of 31839666341 is 14366693813.

It is not a de Polignac number, because 31839666341 - 230 = 30765924517 is a prime.

It is a hoax number, since the sum of its digits (50) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 31839666341.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31839666371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 317345 + ... + 405446.

It is an arithmetic number, because the mean of its divisors is an integer number (1647965760).

Almost surely, 231839666341 is an apocalyptic number.

31839666341 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

31839666341 is a deficient number, since it is larger than the sum of its proper divisors (7711511899).

31839666341 is a wasteful number, since it uses less digits than its factorization.

31839666341 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 722865 (or 722858 counting only the distinct ones).

The product of its digits is 1679616, while the sum is 50.

The spelling of 31839666341 in words is "thirty-one billion, eight hundred thirty-nine million, six hundred sixty-six thousand, three hundred forty-one".

Divisors: 1 7 29 31 49 203 217 899 1421 1519 6293 44051 722791 5059537 20960939 22406521 35416759 146726573 156845647 649789109 1027086011 1097919529 4548523763 31839666341