Search a number
-
+
31597471483 = 1491117189851
BaseRepresentation
bin11101011011010110…
…110010011011111011
310000120002012212021121
4131123112302123323
51004202423041413
622303215250111
72166005035054
oct353326623373
9100502185247
1031597471483
1112444a48aa6
126159b19937
132c97323cb6
14175a68172b
15c4dec8b8d
hex75b5b26fb

31597471483 has 8 divisors (see below), whose sum is σ = 31838180400. Its totient is φ = 31357144800.

The previous prime is 31597471453. The next prime is 31597471489. The reversal of 31597471483 is 38417479513.

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 a de Polignac number, because none of the positive numbers 2k-31597471483 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 31597471483.

It is not an unprimeable number, because it can be changed into a prime (31597471489) 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, 71508 + ... + 261358.

It is an arithmetic number, because the mean of its divisors is an integer number (3979772550).

Almost surely, 231597471483 is an apocalyptic number.

31597471483 is a deficient number, since it is larger than the sum of its proper divisors (240708917).

31597471483 is a wasteful number, since it uses less digits than its factorization.

31597471483 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191117.

The product of its digits is 2540160, while the sum is 52.

The spelling of 31597471483 in words is "thirty-one billion, five hundred ninety-seven million, four hundred seventy-one thousand, four hundred eighty-three".

Divisors: 1 149 1117 166433 189851 28287799 212063567 31597471483