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31122122092 = 22138117333251
BaseRepresentation
bin11100111111000001…
…011110010101101100
32222022221202121111121
4130333001132111230
51002214230401332
622144115030324
72151143446555
oct347701362554
988287677447
1031122122092
1112220698a66
12604689b3a4
132c1c9c0079
1417134a532c
15c223ce797
hex73f05e56c

31122122092 has 24 divisors (see below), whose sum is σ = 54551376432. Its totient is φ = 15536040000.

The previous prime is 31122122041. The next prime is 31122122093. The reversal of 31122122092 is 29022122113.

It is not an unprimeable number, because it can be changed into a prime (31122122093) 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, 9571467 + ... + 9574717.

It is an arithmetic number, because the mean of its divisors is an integer number (2272974018).

Almost surely, 231122122092 is an apocalyptic number.

It is an amenable number.

31122122092 is a deficient number, since it is larger than the sum of its proper divisors (23429254340).

31122122092 is a wasteful number, since it uses less digits than its factorization.

31122122092 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6369 (or 6367 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 25.

The spelling of 31122122092 in words is "thirty-one billion, one hundred twenty-two million, one hundred twenty-two thousand, ninety-two".

Divisors: 1 2 4 1381 1733 2762 3251 3466 5524 6502 6932 13004 2393273 4489631 4786546 5633983 8979262 9573092 11267966 17958524 22535932 7780530523 15561061046 31122122092