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31301130201 = 31117218118133
BaseRepresentation
bin11101001001101100…
…010101011111011001
32222210102121011110120
4131021230111133121
51003101042131301
622213551503453
72155446134235
oct351154253731
988712534416
1031301130201
1112302743450
126096827b89
132c4ab07623
14172d1815c5
15c32e8de36
hex749b157d9

31301130201 has 48 divisors (see below), whose sum is σ = 48634517568. Its totient is φ = 17754854400.

The previous prime is 31301130191. The next prime is 31301130209. The reversal of 31301130201 is 10203110313.

It is not a de Polignac number, because 31301130201 - 27 = 31301130073 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31301130209) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1717131 + ... + 1735263.

It is an arithmetic number, because the mean of its divisors is an integer number (1013219116).

Almost surely, 231301130201 is an apocalyptic number.

It is an amenable number.

31301130201 is a deficient number, since it is larger than the sum of its proper divisors (17333387367).

31301130201 is a wasteful number, since it uses less digits than its factorization.

31301130201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18362 (or 18345 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 15.

Adding to 31301130201 its reverse (10203110313), we get a palindrome (41504240514).

The spelling of 31301130201 in words is "thirty-one billion, three hundred one million, one hundred thirty thousand, two hundred one".

Divisors: 1 3 11 17 33 51 181 187 289 543 561 867 1991 3077 3179 5973 9231 9537 18133 33847 52309 54399 101541 156927 199463 308261 575399 598389 924783 1726197 3282073 3390871 5240437 9846219 10172613 15721311 36102803 55795241 57644807 108308409 167385723 172934421 613747651 948519097 1841242953 2845557291 10433710067 31301130201