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10231112021 = 131903741341
BaseRepresentation
bin10011000011101001…
…00110000101010101
3222102000122100012212
421201310212011111
5131423131041041
64411120123205
7511352005634
oct114164460525
928360570185
1010231112021
114380217989
121b96466505
13c70848950
146d0b2351b
153ed3108eb
hex261d26155

10231112021 has 8 divisors (see below), whose sum is σ = 11018965944. Its totient is φ = 9443378880.

The previous prime is 10231111993. The next prime is 10231112041. The reversal of 10231112021 is 12021113201.

It can be written as a sum of positive squares in 4 ways, for example, as 1127280625 + 9103831396 = 33575^2 + 95414^2 .

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

It is not a de Polignac number, because 10231112021 - 210 = 10231110997 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10231111987 and 10231112005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10231112041) 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, 226811 + ... + 268151.

It is an arithmetic number, because the mean of its divisors is an integer number (1377370743).

Almost surely, 210231112021 is an apocalyptic number.

It is an amenable number.

10231112021 is a deficient number, since it is larger than the sum of its proper divisors (787853923).

10231112021 is a wasteful number, since it uses less digits than its factorization.

10231112021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60391.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 10231112021 its reverse (12021113201), we get a palindrome (22252225222).

The spelling of 10231112021 in words is "ten billion, two hundred thirty-one million, one hundred twelve thousand, twenty-one".

Divisors: 1 13 19037 41341 247481 537433 787008617 10231112021