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10031030031 = 3111915998453
BaseRepresentation
bin10010101011110010…
…10101111100001111
3221220002011010022210
421111321111330033
5131020420430111
64335211441503
7503402230341
oct112571257417
927802133283
1010031030031
114288289370
121b3b456293
13c3b263239
146b231d291
153da98c0a6
hex255e55f0f

10031030031 has 16 divisors (see below), whose sum is σ = 15358515840. Its totient is φ = 5759442720.

The previous prime is 10031030017. The next prime is 10031030039. The reversal of 10031030031 is 13003013001.

It is not a de Polignac number, because 10031030031 - 25 = 10031029999 is a prime.

It is a super-2 number, since 2×100310300312 (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 10031029989 and 10031030016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10031030039) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7998600 + ... + 7999853.

It is an arithmetic number, because the mean of its divisors is an integer number (959907240).

Almost surely, 210031030031 is an apocalyptic number.

10031030031 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

10031030031 is a deficient number, since it is larger than the sum of its proper divisors (5327485809).

10031030031 is a wasteful number, since it uses less digits than its factorization.

10031030031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15998486.

The product of its (nonzero) digits is 27, while the sum is 12.

Adding to 10031030031 its reverse (13003013001), we get a palindrome (23034043032).

The spelling of 10031030031 in words is "ten billion, thirty-one million, thirty thousand, thirty-one".

Divisors: 1 3 11 19 33 57 209 627 15998453 47995359 175982983 303970607 527948949 911911821 3343676677 10031030031