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130231156709 = 177660656277
BaseRepresentation
bin111100101001001100…
…0011011111111100101
3110110011000220020000102
41321102120123333211
54113203134003314
6135454413353445
712260151365423
oct1712230337745
9413130806012
10130231156709
115025a102635
12212a6198885
13c385a4a454
14643607c113
1535c32c45de
hex1e5261bfe5

130231156709 has 4 divisors (see below), whose sum is σ = 137891813004. Its totient is φ = 122570500416.

The previous prime is 130231156703. The next prime is 130231156711. The reversal of 130231156709 is 907651132031.

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

It can be written as a sum of positive squares in 2 ways, for example, as 105574306084 + 24656850625 = 324922^2 + 157025^2 .

It is a cyclic number.

It is not a de Polignac number, because 130231156709 - 216 = 130231091173 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130231156703) 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, 3830328122 + ... + 3830328155.

It is an arithmetic number, because the mean of its divisors is an integer number (34472953251).

Almost surely, 2130231156709 is an apocalyptic number.

It is an amenable number.

130231156709 is a deficient number, since it is larger than the sum of its proper divisors (7660656295).

130231156709 is an equidigital number, since it uses as much as digits as its factorization.

130231156709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7660656294.

The product of its (nonzero) digits is 34020, while the sum is 38.

The spelling of 130231156709 in words is "one hundred thirty billion, two hundred thirty-one million, one hundred fifty-six thousand, seven hundred nine".

Divisors: 1 17 7660656277 130231156709