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231022100512992 = 253131277191334667
BaseRepresentation
bin110100100001110100000110…
…001111001000000011100000
31010021222111102101202121220210
4310201310012033020003200
5220240031230212403432
62135202030545534120
766442540005021405
oct6441640617100340
91107874371677823
10231022100512992
1167679a17007868
1221ab176a044340
139bba3a15aba89
14410975a6802ac
151ba96359648cc
hexd21d063c80e0

231022100512992 has 192 divisors, whose sum is σ = 613606553328384. Its totient is φ = 76101643038720.

The previous prime is 231022100512991. The next prime is 231022100513033. The reversal of 231022100512992 is 299215001220132.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 231022100512992.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231022100512991) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6664017643 + ... + 6664052309.

It is an arithmetic number, because the mean of its divisors is an integer number (3195867465252).

Almost surely, 2231022100512992 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 231022100512992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (306803276664192).

231022100512992 is an abundant number, since it is smaller than the sum of its proper divisors (382584452815392).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

231022100512992 is a wasteful number, since it uses less digits than its factorization.

231022100512992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37001 (or 36993 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 39.

The spelling of 231022100512992 in words is "two hundred thirty-one trillion, twenty-two billion, one hundred million, five hundred twelve thousand, nine hundred ninety-two".