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113121303181 = 1943541136739
BaseRepresentation
bin110100101011010001…
…1100001101010001101
3101210222121200121101121
41221112203201222031
53323133023200211
6123544530040541
711113152132505
oct1512643415215
9353877617347
10113121303181
1143a7a032417
1219b10119151
13a88a073573
145691964a05
152e2114d271
hex1a568e1a8d

113121303181 has 8 divisors (see below), whose sum is σ = 119078661600. Its totient is φ = 107164305360.

The previous prime is 113121303179. The next prime is 113121303199. The reversal of 113121303181 is 181303121311.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 113121303181 - 21 = 113121303179 is a prime.

It is a super-2 number, since 2×1131213031812 (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113121303101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 758910 + ... + 895648.

It is an arithmetic number, because the mean of its divisors is an integer number (14884832700).

Almost surely, 2113121303181 is an apocalyptic number.

It is an amenable number.

113121303181 is a deficient number, since it is larger than the sum of its proper divisors (5957358419).

113121303181 is a wasteful number, since it uses less digits than its factorization.

113121303181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180299.

The product of its (nonzero) digits is 432, while the sum is 25.

Adding to 113121303181 its reverse (181303121311), we get a palindrome (294424424492).

The spelling of 113121303181 in words is "one hundred thirteen billion, one hundred twenty-one million, three hundred three thousand, one hundred eighty-one".

Divisors: 1 19 43541 136739 827279 2598041 5953752799 113121303181