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130170631 = 337386263
BaseRepresentation
bin1111100001000…
…11111100000111
3100001221100112111
413300203330013
5231310430011
620530001451
73140301133
oct760437407
9301840474
10130170631
1167529138
1237716287
1320c78356
14134063c3
15b664121
hex7c23f07

130170631 has 4 divisors (see below), whose sum is σ = 130557232. Its totient is φ = 129784032.

The previous prime is 130170629. The next prime is 130170671. The reversal of 130170631 is 136071031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 136071031 = 283747963.

It is a cyclic number.

It is not a de Polignac number, because 130170631 - 21 = 130170629 is a prime.

It is a super-2 number, since 2×1301706312 = 33888786349876322, 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 (130170611) 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, 192795 + ... + 193468.

It is an arithmetic number, because the mean of its divisors is an integer number (32639308).

Almost surely, 2130170631 is an apocalyptic number.

130170631 is a deficient number, since it is larger than the sum of its proper divisors (386601).

130170631 is an equidigital number, since it uses as much as digits as its factorization.

130170631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 386600.

The product of its (nonzero) digits is 378, while the sum is 22.

The square root of 130170631 is about 11409.2344616105. The cubic root of 130170631 is about 506.8012414245.

The spelling of 130170631 in words is "one hundred thirty million, one hundred seventy thousand, six hundred thirty-one".

Divisors: 1 337 386263 130170631