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130431412 = 221710091901
BaseRepresentation
bin1111100011000…
…11100110110100
3100002102121021001
413301203212310
5231342301122
620535333044
73142435336
oct761434664
9302377231
10130431412
1167697061
1237821184
1321039c67
1413473456
15b6b6527
hex7c639b4

130431412 has 24 divisors (see below), whose sum is σ = 242048520. Its totient is φ = 61286400.

The previous prime is 130431407. The next prime is 130431437. The reversal of 130431412 is 214134031.

It can be written as a sum of positive squares in 4 ways, for example, as 4901796 + 125529616 = 2214^2 + 11204^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 130431412.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67662 + ... + 69562.

It is an arithmetic number, because the mean of its divisors is an integer number (10085355).

Almost surely, 2130431412 is an apocalyptic number.

It is an amenable number.

130431412 is a deficient number, since it is larger than the sum of its proper divisors (111617108).

130431412 is a wasteful number, since it uses less digits than its factorization.

130431412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2931 (or 2929 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 130431412 is about 11420.6572490378. The cubic root of 130431412 is about 507.1394538497.

Adding to 130431412 its reverse (214134031), we get a palindrome (344565443).

The spelling of 130431412 in words is "one hundred thirty million, four hundred thirty-one thousand, four hundred twelve".

Divisors: 1 2 4 17 34 68 1009 1901 2018 3802 4036 7604 17153 32317 34306 64634 68612 129268 1918109 3836218 7672436 32607853 65215706 130431412