Search a number
-
+
131488852387 = 791664415853
BaseRepresentation
bin111101001110101011…
…0001010100110100011
3110120101200110210010211
41322131112022212203
54123242121234022
6140223302234551
712333262542604
oct1723526124643
9416350423124
10131488852387
1150845035a52
1221597425a57
13c526492a89
146515109dab
153648909e77
hex1e9d58a9a3

131488852387 has 4 divisors (see below), whose sum is σ = 133153268320. Its totient is φ = 129824436456.

The previous prime is 131488852361. The next prime is 131488852393. The reversal of 131488852387 is 783258884131.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-131488852387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131488852337) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 832207848 + ... + 832208005.

It is an arithmetic number, because the mean of its divisors is an integer number (33288317080).

Almost surely, 2131488852387 is an apocalyptic number.

131488852387 is a deficient number, since it is larger than the sum of its proper divisors (1664415933).

131488852387 is an equidigital number, since it uses as much as digits as its factorization.

131488852387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1664415932.

The product of its digits is 10321920, while the sum is 58.

The spelling of 131488852387 in words is "one hundred thirty-one billion, four hundred eighty-eight million, eight hundred fifty-two thousand, three hundred eighty-seven".

Divisors: 1 79 1664415853 131488852387