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31233233044 = 22132985324281
BaseRepresentation
bin11101000101101001…
…010101000010010100
32222121200211122002001
4131011221111002110
51002431201424134
622203124325044
72153663046316
oct350551250224
988550748061
1031233233044
11122783892a2
126077b43784
132c39a23cb0
1417241497b6
15c2c02b414
hex745a55094

31233233044 has 48 divisors (see below), whose sum is σ = 60966274320. Its totient is φ = 13901368320.

The previous prime is 31233233041. The next prime is 31233233047. The reversal of 31233233044 is 44033233213.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (31233233041) and next prime (31233233047).

It can be written as a sum of positive squares in 8 ways, for example, as 838797444 + 30394435600 = 28962^2 + 174340^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31233233041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1274184 + ... + 1298464.

It is an arithmetic number, because the mean of its divisors is an integer number (1270130715).

Almost surely, 231233233044 is an apocalyptic number.

It is an amenable number.

31233233044 is a deficient number, since it is larger than the sum of its proper divisors (29733041276).

31233233044 is a wasteful number, since it uses less digits than its factorization.

31233233044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25180 (or 25178 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 28.

Adding to 31233233044 its reverse (44033233213), we get a palindrome (75266466257).

The spelling of 31233233044 in words is "thirty-one billion, two hundred thirty-three million, two hundred thirty-three thousand, forty-four".

Divisors: 1 2 4 13 26 29 52 58 116 377 754 853 1508 1706 3412 11089 22178 24281 24737 44356 48562 49474 97124 98948 315653 321581 631306 643162 704149 1262612 1286324 1408298 2816596 9153937 18307874 20711693 36615748 41423386 82846772 269252009 538504018 600639097 1077008036 1201278194 2402556388 7808308261 15616616522 31233233044