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130542231 = 3137317621
BaseRepresentation
bin1111100011111…
…10101010010111
3100002122020021110
413301332222113
5231404322411
620541550103
73143406411
oct761765227
9302566243
10130542231
1167762346
1237875333
1321078531
14134a19b1
15b6d92a6
hex7c7ea97

130542231 has 8 divisors (see below), whose sum is σ = 175327344. Its totient is φ = 86392640.

The previous prime is 130542199. The next prime is 130542241. The reversal of 130542231 is 132245031.

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 130542231 - 25 = 130542199 is a prime.

It is a super-2 number, since 2×1305422312 = 34082548148914722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 130542198 and 130542207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130542241) 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, 158400 + ... + 159221.

It is an arithmetic number, because the mean of its divisors is an integer number (21915918).

Almost surely, 2130542231 is an apocalyptic number.

130542231 is a deficient number, since it is larger than the sum of its proper divisors (44785113).

130542231 is a wasteful number, since it uses less digits than its factorization.

130542231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317761.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 130542231 is about 11425.5079099356. The cubic root of 130542231 is about 507.2830408816.

Adding to 130542231 its reverse (132245031), we get a palindrome (262787262).

It can be divided in two parts, 130 and 542231, that added together give a triangular number (542361 = T1041).

The spelling of 130542231 in words is "one hundred thirty million, five hundred forty-two thousand, two hundred thirty-one".

Divisors: 1 3 137 411 317621 952863 43514077 130542231