Search a number
-
+
131298793643 = 285146053593
BaseRepresentation
bin111101001001000000…
…1001001100010101011
3110112220102211210120002
41322102001021202223
54122344442344033
6140152352453215
712325464221513
oct1722201114253
9415812753502
10131298793643
1150757823006
122154384a20b
13c4c5ca9694
1464d7b94843
153636db63e8
hex1e920498ab

131298793643 has 4 divisors (see below), whose sum is σ = 131344850088. Its totient is φ = 131252737200.

The previous prime is 131298793621. The next prime is 131298793657. The reversal of 131298793643 is 346397892131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 346397892131 = 675170117793.

It is a cyclic number.

It is not a de Polignac number, because 131298793643 - 212 = 131298789547 is a prime.

It is a super-3 number, since 3×1312987936433 (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131298723643) 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, 23023946 + ... + 23029647.

It is an arithmetic number, because the mean of its divisors is an integer number (32836212522).

Almost surely, 2131298793643 is an apocalyptic number.

131298793643 is a deficient number, since it is larger than the sum of its proper divisors (46056445).

131298793643 is an equidigital number, since it uses as much as digits as its factorization.

131298793643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46056444.

The product of its digits is 5878656, while the sum is 56.

The spelling of 131298793643 in words is "one hundred thirty-one billion, two hundred ninety-eight million, seven hundred ninety-three thousand, six hundred forty-three".

Divisors: 1 2851 46053593 131298793643