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130020121313 = 138779369469
BaseRepresentation
bin111100100010111001…
…1011001101011100001
3110102121022210111212122
41321011303121223201
54112240122340223
6135421434234025
712252006540035
oct1710563315341
9412538714778
10130020121313
1150160a72615
1221247585915
13c3510cb234
1464160261c5
1535ae9da5c8
hex1e45cd9ae1

130020121313 has 4 divisors (see below), whose sum is σ = 130029504660. Its totient is φ = 130010737968.

The previous prime is 130020121307. The next prime is 130020121331. The reversal of 130020121313 is 313121020031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 313121020031 = 1239532526127.

It can be written as a sum of positive squares in 2 ways, for example, as 14860341409 + 115159779904 = 121903^2 + 339352^2 .

It is a cyclic number.

It is not a de Polignac number, because 130020121313 - 212 = 130020117217 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 130020121291 and 130020121300.

It is not an unprimeable number, because it can be changed into a prime (130020121303) 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, 4670858 + ... + 4698611.

It is an arithmetic number, because the mean of its divisors is an integer number (32507376165).

Almost surely, 2130020121313 is an apocalyptic number.

It is an amenable number.

130020121313 is a deficient number, since it is larger than the sum of its proper divisors (9383347).

130020121313 is an equidigital number, since it uses as much as digits as its factorization.

130020121313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9383346.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 130020121313 its reverse (313121020031), we get a palindrome (443141141344).

The spelling of 130020121313 in words is "one hundred thirty billion, twenty million, one hundred twenty-one thousand, three hundred thirteen".

Divisors: 1 13877 9369469 130020121313