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132130231 = 671972093
BaseRepresentation
bin1111110000000…
…10010110110111
3100012121220121021
413320002112313
5232311131411
621040002011
73163042222
oct770022667
9305556537
10132130231
1168647442
1238300307
13214b328c
14137965b9
15b8eea71
hex7e025b7

132130231 has 4 divisors (see below), whose sum is σ = 134102392. Its totient is φ = 130158072.

The previous prime is 132130213. The next prime is 132130241. The reversal of 132130231 is 132031231.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-132130231 is a prime.

It is a super-2 number, since 2×1321302312 = 34916795888226722, 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 (132130241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 985980 + ... + 986113.

It is an arithmetic number, because the mean of its divisors is an integer number (33525598).

Almost surely, 2132130231 is an apocalyptic number.

132130231 is a deficient number, since it is larger than the sum of its proper divisors (1972161).

132130231 is an equidigital number, since it uses as much as digits as its factorization.

132130231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1972160.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 132130231 is about 11494.7914726627. The cubic root of 132130231 is about 509.3317288496.

Adding to 132130231 its reverse (132031231), we get a palindrome (264161462).

The spelling of 132130231 in words is "one hundred thirty-two million, one hundred thirty thousand, two hundred thirty-one".

Divisors: 1 67 1972093 132130231