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31213001113301 = 7196113129368567
BaseRepresentation
bin1110001100011010101111…
…10101111111111011010101
311002111221012201021212002102
413012031113311333323111
513042343211241111201
6150215015454451445
76401031156624530
oct706152765777325
9132457181255072
1031213001113301
119a443a5452a87
123601356b03b85
1314554b13c85b7
1479ca0844da17
15391dc608626b
hex1c6357d7fed5

31213001113301 has 32 divisors (see below), whose sum is σ = 38456377681920. Its totient is φ = 24740079998400.

The previous prime is 31213001113267. The next prime is 31213001113309. The reversal of 31213001113301 is 10331110031213.

It is not a de Polignac number, because 31213001113301 - 26 = 31213001113237 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31213001113309) 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, 13621481 + ... + 15747086.

It is an arithmetic number, because the mean of its divisors is an integer number (1201761802560).

Almost surely, 231213001113301 is an apocalyptic number.

It is an amenable number.

31213001113301 is a deficient number, since it is larger than the sum of its proper divisors (7243376568619).

31213001113301 is a wasteful number, since it uses less digits than its factorization.

31213001113301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29368785.

The product of its (nonzero) digits is 162, while the sum is 20.

Adding to 31213001113301 its reverse (10331110031213), we get a palindrome (41544111144514).

The spelling of 31213001113301 in words is "thirty-one trillion, two hundred thirteen billion, one million, one hundred thirteen thousand, three hundred one".

Divisors: 1 7 19 61 131 133 427 917 1159 2489 7991 8113 17423 55937 151829 1062803 29368567 205579969 558002773 1791482587 3847282277 3906019411 12540378109 26930975939 34038169153 73098363263 234684218897 238267184071 511688542841 1642789532279 4459000159043 31213001113301