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23311102031 = 727712022229
BaseRepresentation
bin10101101101011100…
…110011000001001111
32020011120221200100022
4111231130303001033
5340220120231111
614413045452355
71453446045410
oct255534630117
966146850308
1023311102031
119982566a88
124626a110bb
1322766762c9
1411b1d51807
159167b32db
hex56d73304f

23311102031 has 8 divisors (see below), whose sum is σ = 26737439520. Its totient is φ = 19908809568.

The previous prime is 23311102021. The next prime is 23311102063. The reversal of 23311102031 is 13020111332.

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 23311102031 - 26 = 23311101967 is a prime.

It is a super-2 number, since 2×233111020312 (a number of 22 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 (23311102021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6009176 + ... + 6013053.

It is an arithmetic number, because the mean of its divisors is an integer number (3342179940).

Almost surely, 223311102031 is an apocalyptic number.

23311102031 is a deficient number, since it is larger than the sum of its proper divisors (3426337489).

23311102031 is a wasteful number, since it uses less digits than its factorization.

23311102031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12022513.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 23311102031 its reverse (13020111332), we get a palindrome (36331213363).

The spelling of 23311102031 in words is "twenty-three billion, three hundred eleven million, one hundred two thousand, thirty-one".

Divisors: 1 7 277 1939 12022229 84155603 3330157433 23311102031