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130312230 = 23515532797
BaseRepresentation
bin1111100010001…
…10100000100110
3100002012112202220
413301012200212
5231324442410
620533013210
73141431016
oct761064046
9302175686
10130312230
1167615564
1237784206
1320cc7939
1413441c46
15b691070
hex7c46826

130312230 has 32 divisors (see below), whose sum is σ = 313062624. Its totient is φ = 34715136.

The previous prime is 130312223. The next prime is 130312243. The reversal of 130312230 is 32213031.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45192 + ... + 47988.

It is an arithmetic number, because the mean of its divisors is an integer number (9783207).

Almost surely, 2130312230 is an apocalyptic number.

130312230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

130312230 is an abundant number, since it is smaller than the sum of its proper divisors (182750394).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

130312230 is a wasteful number, since it uses less digits than its factorization.

130312230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4360.

The product of its (nonzero) digits is 108, while the sum is 15.

The square root of 130312230 is about 11415.4382307470. The cubic root of 130312230 is about 506.9849401671.

Adding to 130312230 its reverse (32213031), we get a palindrome (162525261).

The spelling of 130312230 in words is "one hundred thirty million, three hundred twelve thousand, two hundred thirty".

Divisors: 1 2 3 5 6 10 15 30 1553 2797 3106 4659 5594 7765 8391 9318 13985 15530 16782 23295 27970 41955 46590 83910 4343741 8687482 13031223 21718705 26062446 43437410 65156115 130312230