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231513452142113 = 61109110873140551
BaseRepresentation
bin110100101000111101101101…
…000100110101111000100001
31010100201110200112112120121202
4310220331231010311320201
5220321104022222021423
62140215451152330545
766523203110660561
oct6450755504657041
91110643615476552
10231513452142113
1167849338211209
1221b70a36843a55
139c24817a8311b
14412544d060da1
151bb72e21c7728
hexd28f6d135e21

231513452142113 has 16 divisors (see below), whose sum is σ = 237489044728320. Its totient is φ = 225608569704000.

The previous prime is 231513452142107. The next prime is 231513452142191. The reversal of 231513452142113 is 311241254315132.

231513452142113 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-231513452142113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231513452142013) 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, 72147188 + ... + 75287738.

It is an arithmetic number, because the mean of its divisors is an integer number (14843065295520).

Almost surely, 2231513452142113 is an apocalyptic number.

It is an amenable number.

231513452142113 is a deficient number, since it is larger than the sum of its proper divisors (5975592586207).

231513452142113 is a wasteful number, since it uses less digits than its factorization.

231513452142113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3151808.

The product of its digits is 86400, while the sum is 38.

The spelling of 231513452142113 in words is "two hundred thirty-one trillion, five hundred thirteen billion, four hundred fifty-two million, one hundred forty-two thousand, one hundred thirteen".

Divisors: 1 61 109 6649 11087 676307 1208483 3140551 73717463 191573611 342320059 20881523599 34819288937 2123976625157 3795302494133 231513452142113