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10312321231 = 197110697151
BaseRepresentation
bin10011001101010100…
…11000100011001111
3222121200110012022101
421212222120203033
5132104423234411
64423140455531
7513356166322
oct114652304317
928550405271
1010312321231
114412044633
121bb96aa5a7
13c84610534
146db8227b9
154055028c1
hex266a988cf

10312321231 has 16 divisors (see below), whose sum is σ = 11019801600. Its totient is φ = 9621612000.

The previous prime is 10312321211. The next prime is 10312321237. The reversal of 10312321231 is 13212321301.

10312321231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 10312321231 - 29 = 10312320719 is a prime.

It is a super-2 number, since 2×103123212312 (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10312321199 and 10312321208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10312321237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1438506 + ... + 1445656.

It is an arithmetic number, because the mean of its divisors is an integer number (688737600).

Almost surely, 210312321231 is an apocalyptic number.

10312321231 is a deficient number, since it is larger than the sum of its proper divisors (707480369).

10312321231 is a wasteful number, since it uses less digits than its factorization.

10312321231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8310.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 10312321231 its reverse (13212321301), we get a palindrome (23524642532).

The spelling of 10312321231 in words is "ten billion, three hundred twelve million, three hundred twenty-one thousand, two hundred thirty-one".

Divisors: 1 19 71 1069 1349 7151 20311 75899 135869 507721 1442081 7644419 9646699 145243961 542753749 10312321231