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231310332131023 = 1811657771247819
BaseRepresentation
bin110100100110000000100010…
…001011011111011011001111
31010100000001101202101220112001
4310212000202023133123033
5220304242030011143043
62135542255525453131
766502422443242405
oct6446004213373317
91110001352356461
10231310332131023
1167780185270552
1221b395aa2711a7
139c0b617250752
1441196a0857475
151bb1da4da574d
hexd260222df6cf

231310332131023 has 8 divisors (see below), whose sum is σ = 232728657171920. Its totient is φ = 229893549589440.

The previous prime is 231310332131003. The next prime is 231310332131057. The reversal of 231310332131023 is 320131233013132.

It is a happy number.

231310332131023 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 231310332131023 - 229 = 231309795260111 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 231310332130982 and 231310332131000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231310332131003) 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, 385323993 + ... + 385923826.

It is an arithmetic number, because the mean of its divisors is an integer number (29091082146490).

Almost surely, 2231310332131023 is an apocalyptic number.

231310332131023 is a deficient number, since it is larger than the sum of its proper divisors (1418325040897).

231310332131023 is a wasteful number, since it uses less digits than its factorization.

231310332131023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 771249657.

The product of its (nonzero) digits is 5832, while the sum is 28.

Adding to 231310332131023 its reverse (320131233013132), we get a palindrome (551441565144155).

The spelling of 231310332131023 in words is "two hundred thirty-one trillion, three hundred ten billion, three hundred thirty-two million, one hundred thirty-one thousand, twenty-three".

Divisors: 1 181 1657 299917 771247819 139595855239 1277957636083 231310332131023