Search a number
-
+
130618231 is a prime number
BaseRepresentation
bin1111100100100…
…01001101110111
3100002210002112021
413302101031313
5231414240411
620543334011
73144144112
oct762211567
9302702467
10130618231
1167804457
12378b1307
13210a3cc3
14134c1579
15b701a71
hex7c91377

130618231 has 2 divisors, whose sum is σ = 130618232. Its totient is φ = 130618230.

The previous prime is 130618223. The next prime is 130618247. The reversal of 130618231 is 132816031.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 130618231 - 23 = 130618223 is a prime.

It is a super-2 number, since 2×1306182312 = 34122244539138722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 130618196 and 130618205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (130618211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65309115 + 65309116.

It is an arithmetic number, because the mean of its divisors is an integer number (65309116).

Almost surely, 2130618231 is an apocalyptic number.

130618231 is a deficient number, since it is larger than the sum of its proper divisors (1).

130618231 is an equidigital number, since it uses as much as digits as its factorization.

130618231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 130618231 is about 11428.8333175351. The cubic root of 130618231 is about 507.3814663272.

The spelling of 130618231 in words is "one hundred thirty million, six hundred eighteen thousand, two hundred thirty-one".