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1313210223121 = 8263158926567
BaseRepresentation
bin10011000111000001011…
…011011100101000010001
311122112121212201022121011
4103013001123130220101
5133003423304114441
62443140324330521
7163606400502406
oct23070133345021
94575555638534
101313210223121
11466a24a32365
12192613543a41
1396ab1bc2704
14477b9bd82ad
152425da50581
hex131c16dca11

1313210223121 has 4 divisors (see below), whose sum is σ = 1313369157952. Its totient is φ = 1313051288292.

The previous prime is 1313210223119. The next prime is 1313210223161. The reversal of 1313210223121 is 1213220123131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1313210223121 - 21 = 1313210223119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1313210223092 and 1313210223101.

It is not an unprimeable number, because it can be changed into a prime (1313210223161) 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, 79455021 + ... + 79471546.

It is an arithmetic number, because the mean of its divisors is an integer number (328342289488).

Almost surely, 21313210223121 is an apocalyptic number.

It is an amenable number.

1313210223121 is a deficient number, since it is larger than the sum of its proper divisors (158934831).

1313210223121 is an equidigital number, since it uses as much as digits as its factorization.

1313210223121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158934830.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 1313210223121 its reverse (1213220123131), we get a palindrome (2526430346252).

The spelling of 1313210223121 in words is "one trillion, three hundred thirteen billion, two hundred ten million, two hundred twenty-three thousand, one hundred twenty-one".

Divisors: 1 8263 158926567 1313210223121