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201230030031 = 31019188934847
BaseRepresentation
bin1011101101101000111…
…1101001010011001111
3201020102001210200111020
42323122033221103033
511244104341430111
6232235505525223
720352445014252
oct2733217512317
9636361720436
10201230030031
1178383118a48
1232bbb643813
1315c8c0c91b4
149a4d5cb099
15537b442906
hex2eda3e94cf

201230030031 has 16 divisors (see below), whose sum is σ = 268719897600. Its totient is φ = 133946908928.

The previous prime is 201230029993. The next prime is 201230030039. The reversal of 201230030031 is 130030032102.

It is a cyclic number.

It is not a de Polignac number, because 201230030031 - 29 = 201230029519 is a prime.

It is a super-2 number, since 2×2012300300312 (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201230030039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5757250 + ... + 5792096.

It is an arithmetic number, because the mean of its divisors is an integer number (16794993600).

Almost surely, 2201230030031 is an apocalyptic number.

201230030031 is a deficient number, since it is larger than the sum of its proper divisors (67489867569).

201230030031 is a wasteful number, since it uses less digits than its factorization.

201230030031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37758.

The product of its (nonzero) digits is 108, while the sum is 15.

Adding to 201230030031 its reverse (130030032102), we get a palindrome (331260062133).

The spelling of 201230030031 in words is "two hundred one billion, two hundred thirty million, thirty thousand, thirty-one".

Divisors: 1 3 1019 1889 3057 5667 34847 104541 1924891 5774673 35509093 65825983 106527279 197477949 67076676677 201230030031