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130231312012 = 22144612251423
BaseRepresentation
bin111100101001001100…
…1000001111010001100
3110110011001012010001101
41321102121001322030
54113203203441022
6135454420552444
712260152613254
oct1712231017214
9413131163041
10130231312012
115025a1a928a
12212a6252724
13c385aa3049
1464360bc964
1535c3305627
hex1e52641e8c

130231312012 has 12 divisors (see below), whose sum is σ = 227920657216. Its totient is φ = 65111124240.

The previous prime is 130231311979. The next prime is 130231312019. The reversal of 130231312012 is 210213132031.

It is not an unprimeable number, because it can be changed into a prime (130231312019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1067868 + ... + 1183555.

Almost surely, 2130231312012 is an apocalyptic number.

It is an amenable number.

130231312012 is a deficient number, since it is larger than the sum of its proper divisors (97689345204).

130231312012 is a wasteful number, since it uses less digits than its factorization.

130231312012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2265888 (or 2265886 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 130231312012 its reverse (210213132031), we get a palindrome (340444444043).

The spelling of 130231312012 in words is "one hundred thirty billion, two hundred thirty-one million, three hundred twelve thousand, twelve".

Divisors: 1 2 4 14461 28922 57844 2251423 4502846 9005692 32557828003 65115656006 130231312012