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100010031 = 31117473793
BaseRepresentation
bin1011111011000…
…00100000101111
320222012000222020
411331200200233
5201100310111
613531321223
72323033302
oct575404057
9228160866
10100010031
11514a9020
12295b0213
1317948244
14d3d4b39
158ba7906
hex5f6082f

100010031 has 32 divisors (see below), whose sum is σ = 157344768. Its totient is φ = 55818240.

The previous prime is 100010023. The next prime is 100010033. The reversal of 100010031 is 130010001.

It is not a de Polignac number, because 100010031 - 23 = 100010023 is a prime.

It is a super-2 number, since 2×1000100312 = 20004012601241922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100010033) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 24471 + ... + 28263.

It is an arithmetic number, because the mean of its divisors is an integer number (4917024).

Almost surely, 2100010031 is an apocalyptic number.

100010031 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

100010031 is a deficient number, since it is larger than the sum of its proper divisors (57334737).

100010031 is a wasteful number, since it uses less digits than its factorization.

100010031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3871.

The product of its (nonzero) digits is 3, while the sum is 6.

The square root of 100010031 is about 10000.5015374230. The cubic root of 100010031 is about 464.1744027682.

Adding to 100010031 its reverse (130010001), we get a palindrome (230020032).

The spelling of 100010031 in words is "one hundred million, ten thousand, thirty-one".

Divisors: 1 3 11 17 33 47 51 141 187 517 561 799 1551 2397 3793 8789 11379 26367 41723 64481 125169 178271 193443 534813 709291 1960981 2127873 3030607 5882943 9091821 33336677 100010031