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31311012033148 = 22172771662296243
BaseRepresentation
bin1110001111010001010011…
…01111111111001001111100
311002212022012021010110022211
413013220221233333021330
513100444423040030043
6150332025204550204
76411101031661531
oct707505157771174
9132768167113284
1031311012033148
119a81a2001a791
12361834a6b2364
131461800ab5123
147a3665258d88
15394710868a9d
hex1c7a29bff27c

31311012033148 has 24 divisors (see below), whose sum is σ = 58226912834832. Its totient is φ = 14681400409344.

The previous prime is 31311012033113. The next prime is 31311012033149. The reversal of 31311012033148 is 84133021011313.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31311012033149) 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, 831129286 + ... + 831166957.

It is an arithmetic number, because the mean of its divisors is an integer number (2426121368118).

Almost surely, 231311012033148 is an apocalyptic number.

It is an amenable number.

31311012033148 is a deficient number, since it is larger than the sum of its proper divisors (26915900801684).

31311012033148 is a wasteful number, since it uses less digits than its factorization.

31311012033148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1662296541 (or 1662296539 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 31.

The spelling of 31311012033148 in words is "thirty-one trillion, three hundred eleven billion, twelve million, thirty-three thousand, one hundred forty-eight".

Divisors: 1 2 4 17 34 68 277 554 1108 4709 9418 18836 1662296243 3324592486 6649184972 28259036131 56518072262 113036144524 460456059311 920912118622 1841824237244 7827753008287 15655506016574 31311012033148