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130312330 = 2513031233
BaseRepresentation
bin1111100010001…
…10100010001010
3100002012112220121
413301012202022
5231324443310
620533013454
73141431221
oct761064212
9302175817
10130312330
1167615645
123778428a
1320cc79b5
1413441cb8
15b6910da
hex7c4688a

130312330 has 8 divisors (see below), whose sum is σ = 234562212. Its totient is φ = 52124928.

The previous prime is 130312289. The next prime is 130312339. The reversal of 130312330 is 33213031.

130312330 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 124077321 + 6235009 = 11139^2 + 2497^2 .

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

It is not an unprimeable number, because it can be changed into a prime (130312339) 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, 6515607 + ... + 6515626.

Almost surely, 2130312330 is an apocalyptic number.

130312330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

130312330 is a deficient number, since it is larger than the sum of its proper divisors (104249882).

130312330 is a wasteful number, since it uses less digits than its factorization.

130312330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13031240.

The product of its (nonzero) digits is 162, while the sum is 16.

The square root of 130312330 is about 11415.4426107795. The cubic root of 130312330 is about 506.9850698517.

Adding to 130312330 its reverse (33213031), we get a palindrome (163525361).

The spelling of 130312330 in words is "one hundred thirty million, three hundred twelve thousand, three hundred thirty".

Divisors: 1 2 5 10 13031233 26062466 65156165 130312330