Search a number
-
+
31712808959 = 1319112771973
BaseRepresentation
bin11101100010001110…
…110000111111111111
310000212010020121112222
4131202032300333333
51004421434341314
622322455315555
72201605266656
oct354216607777
9100763217488
1031712808959
11124a4065827
12619067bbbb
132cb51a7920
14176bb0619d
15c591acc8e
hex7623b0fff

31712808959 has 8 divisors (see below), whose sum is σ = 34331066112. Its totient is φ = 29120096160.

The previous prime is 31712808923. The next prime is 31712808989. The reversal of 31712808959 is 95980821713.

It is a happy number.

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 31712808959 - 232 = 27417841663 is a prime.

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 31712808959.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31712808989) 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 7 ways as a sum of consecutive naturals, for example, 6383504 + ... + 6388469.

It is an arithmetic number, because the mean of its divisors is an integer number (4291383264).

Almost surely, 231712808959 is an apocalyptic number.

31712808959 is a deficient number, since it is larger than the sum of its proper divisors (2618257153).

31712808959 is a wasteful number, since it uses less digits than its factorization.

31712808959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12772177.

The product of its (nonzero) digits is 1088640, while the sum is 53.

The spelling of 31712808959 in words is "thirty-one billion, seven hundred twelve million, eight hundred eight thousand, nine hundred fifty-nine".

Divisors: 1 13 191 2483 12771973 166035649 2439446843 31712808959