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231231203031013 = 1914980124309443
BaseRepresentation
bin110100100100110110110101…
…101101111011011111100101
31010022201111011010001010201021
4310210312311231323133211
5220301443000433443023
62135442052002331141
766463621525060003
oct6444666555733745
91108644133033637
10231231203031013
116774a669a20529
1221b261a6059ab1
139c04016693b93
144115915621a73
151baecc30b635d
hexd24db5b7b7e5

231231203031013 has 8 divisors (see below), whose sum is σ = 232446514576896. Its totient is φ = 230015940204000.

The previous prime is 231231203030983. The next prime is 231231203031019. The reversal of 231231203031013 is 310130302132132.

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 231231203031013 - 29 = 231231203030501 is a prime.

It is a super-3 number, since 3×2312312030310133 (a number of 44 digits) contains 333 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 (231231203031019) 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, 2642731 + ... + 21666712.

It is an arithmetic number, because the mean of its divisors is an integer number (29055814322112).

Almost surely, 2231231203031013 is an apocalyptic number.

It is an amenable number.

231231203031013 is a deficient number, since it is larger than the sum of its proper divisors (1215311545883).

231231203031013 is a wasteful number, since it uses less digits than its factorization.

231231203031013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24359435.

The product of its (nonzero) digits is 1944, while the sum is 25.

Adding to 231231203031013 its reverse (310130302132132), we get a palindrome (541361505163145).

The spelling of 231231203031013 in words is "two hundred thirty-one trillion, two hundred thirty-one billion, two hundred three million, thirty-one thousand, thirteen".

Divisors: 1 191 49801 9511991 24309443 4643103613 1210634570843 231231203031013