Search a number
-
+
131430371 is a prime number
BaseRepresentation
bin1111101010101…
…11011111100011
3100011022100120112
413311113133203
5232121232441
621013001535
73154065632
oct765273743
9304270515
10131430371
1168209646
12380232ab
13212c9867
1413653519
15b8124eb
hex7d577e3

131430371 has 2 divisors, whose sum is σ = 131430372. Its totient is φ = 131430370.

The previous prime is 131430319. The next prime is 131430427. The reversal of 131430371 is 173034131.

It is a weak prime.

It is an emirp because it is prime and its reverse (173034131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 131430371 - 218 = 131168227 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (131433371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65715185 + 65715186.

It is an arithmetic number, because the mean of its divisors is an integer number (65715186).

Almost surely, 2131430371 is an apocalyptic number.

131430371 is a deficient number, since it is larger than the sum of its proper divisors (1).

131430371 is an equidigital number, since it uses as much as digits as its factorization.

131430371 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 756, while the sum is 23.

The square root of 131430371 is about 11464.3085705157. The cubic root of 131430371 is about 508.4308698504.

The spelling of 131430371 in words is "one hundred thirty-one million, four hundred thirty thousand, three hundred seventy-one".