Search a number
-
+
481000231 is a prime number
BaseRepresentation
bin11100101010110…
…111101100100111
31020112002100021101
4130222313230213
51441114001411
6115421300531
714630302015
oct3452675447
91215070241
10481000231
1122756a658
12115104747
137886202a
1447c4b8b5
152c3638c1
hex1cab7b27

481000231 has 2 divisors, whose sum is σ = 481000232. Its totient is φ = 481000230.

The previous prime is 481000229. The next prime is 481000249. The reversal of 481000231 is 132000184.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 481000231 - 21 = 481000229 is a prime.

It is a super-3 number, since 3×4810002313 (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

Together with 481000229, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 481000199 and 481000208.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (481000211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 240500115 + 240500116.

It is an arithmetic number, because the mean of its divisors is an integer number (240500116).

Almost surely, 2481000231 is an apocalyptic number.

481000231 is a deficient number, since it is larger than the sum of its proper divisors (1).

481000231 is an equidigital number, since it uses as much as digits as its factorization.

481000231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 481000231 is about 21931.7174658074. The cubic root of 481000231 is about 783.5170081235.

The spelling of 481000231 in words is "four hundred eighty-one million, two hundred thirty-one", and thus it is an aban number.