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130312043 = 2361293317
BaseRepresentation
bin1111100010001…
…10011101101011
3100002012112111222
413301012131223
5231324441133
620533012255
73141430331
oct761063553
9302175458
10130312043
1167615404
123778408b
1320cc7824
1413441b51
15b690e98
hex7c4676b

130312043 has 16 divisors (see below), whose sum is σ = 139116096. Its totient is φ = 121799040.

The previous prime is 130312037. The next prime is 130312067. The reversal of 130312043 is 340213031.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 130312043 - 28 = 130311787 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (130312093) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 410921 + ... + 411237.

It is an arithmetic number, because the mean of its divisors is an integer number (8694756).

Almost surely, 2130312043 is an apocalyptic number.

130312043 is a deficient number, since it is larger than the sum of its proper divisors (8804053).

130312043 is a wasteful number, since it uses less digits than its factorization.

130312043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 694.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 130312043 is about 11415.4300400817. The cubic root of 130312043 is about 506.9846976567.

Adding to 130312043 its reverse (340213031), we get a palindrome (470525074).

The spelling of 130312043 in words is "one hundred thirty million, three hundred twelve thousand, forty-three".

Divisors: 1 23 61 293 317 1403 6739 7291 17873 19337 92881 411079 444751 2136263 5665741 130312043