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31010112321 = 316996083993
BaseRepresentation
bin11100111000010110…
…001100001101000001
32222001010222220222120
4130320112030031001
51002002042043241
622125034154453
72145313414506
oct347026141501
988033886876
1031010112321
1112173444401
126015282a29
132c02732cb6
1417026694ad
15c17656666
hex73858c341

31010112321 has 8 divisors (see below), whose sum is σ = 41371159200. Its totient is φ = 20661236832.

The previous prime is 31010112311. The next prime is 31010112347. The reversal of 31010112321 is 12321101013.

It is a happy number.

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

It is not a de Polignac number, because 31010112321 - 27 = 31010112193 is a prime.

It is a super-2 number, since 2×310101123212 (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 31010112321.

It is not an unprimeable number, because it can be changed into a prime (31010112311) 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, 3036900 + ... + 3047093.

It is an arithmetic number, because the mean of its divisors is an integer number (5171394900).

Almost surely, 231010112321 is an apocalyptic number.

It is an amenable number.

31010112321 is a deficient number, since it is larger than the sum of its proper divisors (10361046879).

31010112321 is a wasteful number, since it uses less digits than its factorization.

31010112321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6085695.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 31010112321 its reverse (12321101013), we get a palindrome (43331213334).

The spelling of 31010112321 in words is "thirty-one billion, ten million, one hundred twelve thousand, three hundred twenty-one".

Divisors: 1 3 1699 5097 6083993 18251979 10336704107 31010112321