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31013001201 = 3713619183523
BaseRepresentation
bin11100111000100001…
…001101011111110001
32222001100102200210010
4130320201031133301
51002003312014301
622125220125133
72145350106060
oct347041153761
988040380703
1031013001201
1112175037906
1260162367a9
132c03204bb0
141702bbc1d7
15c17a275d6
hex73884d7f1

31013001201 has 32 divisors (see below), whose sum is σ = 50975626240. Its totient is φ = 16331989824.

The previous prime is 31013001191. The next prime is 31013001203. The reversal of 31013001201 is 10210031013.

It is not a de Polignac number, because 31013001201 - 211 = 31012999153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31013001203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 77226 + ... + 260748.

It is an arithmetic number, because the mean of its divisors is an integer number (1592988320).

Almost surely, 231013001201 is an apocalyptic number.

It is an amenable number.

31013001201 is a deficient number, since it is larger than the sum of its proper divisors (19962625039).

31013001201 is a wasteful number, since it uses less digits than its factorization.

31013001201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184165.

The product of its (nonzero) digits is 18, while the sum is 12.

Adding to 31013001201 its reverse (10210031013), we get a palindrome (41223032214).

The spelling of 31013001201 in words is "thirty-one billion, thirteen million, one thousand, two hundred one".

Divisors: 1 3 7 13 21 39 91 273 619 1857 4333 8047 12999 24141 56329 168987 183523 550569 1284661 2385799 3853983 7157397 16700593 50101779 113600737 340802211 795205159 1476809581 2385615477 4430428743 10337667067 31013001201