Search a number
-
+
130523431 = 2413791429
BaseRepresentation
bin1111100011110…
…10000100100111
3100002121021111011
413301322010213
5231403222211
620541323051
73143300533
oct761720447
9302537434
10130523431
116774a205
1237866487
132106cacc
1413498bc3
15b6d3921
hex7c7a127

130523431 has 8 divisors (see below), whose sum is σ = 131502800. Its totient is φ = 129548160.

The previous prime is 130523381. The next prime is 130523441. The reversal of 130523431 is 134325031.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 130523431 - 215 = 130490663 is a prime.

It is a super-2 number, since 2×1305234312 = 34072732080023522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130523441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90625 + ... + 92053.

It is an arithmetic number, because the mean of its divisors is an integer number (16437850).

Almost surely, 2130523431 is an apocalyptic number.

130523431 is a deficient number, since it is larger than the sum of its proper divisors (979369).

130523431 is a wasteful number, since it uses less digits than its factorization.

130523431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2049.

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 130523431 is about 11424.6851597757. The cubic root of 130523431 is about 507.2586876412.

Adding to 130523431 its reverse (134325031), we get a palindrome (264848462).

The spelling of 130523431 in words is "one hundred thirty million, five hundred twenty-three thousand, four hundred thirty-one".

Divisors: 1 241 379 1429 91339 344389 541591 130523431