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201289308031 = 7135721211873
BaseRepresentation
bin1011101101110111000…
…1110001011101111111
3201020120012100022121201
42323131301301131333
511244220030324111
6232245424240331
720354064613360
oct2733561613577
9636505308551
10201289308031
1178403626429
12330174700a7
1315c9b482636
149a5741bb67
1553817516c1
hex2eddc7177f

201289308031 has 8 divisors (see below), whose sum is σ = 230047704224. Its totient is φ = 172531607040.

The previous prime is 201289308007. The next prime is 201289308037. The reversal of 201289308031 is 130803982102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 201289308031 - 29 = 201289307519 is a prime.

It is a super-2 number, since 2×2012893080312 (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201289308037) 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, 844111 + ... + 1055983.

It is an arithmetic number, because the mean of its divisors is an integer number (28755963028).

Almost surely, 2201289308031 is an apocalyptic number.

201289308031 is a deficient number, since it is larger than the sum of its proper divisors (28758396193).

201289308031 is a wasteful number, since it uses less digits than its factorization.

201289308031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 347601.

The product of its (nonzero) digits is 20736, while the sum is 37.

The spelling of 201289308031 in words is "two hundred one billion, two hundred eighty-nine million, three hundred eight thousand, thirty-one".

Divisors: 1 7 135721 211873 950047 1483111 28755615433 201289308031