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110020031 = 1110001821
BaseRepresentation
bin1101000111011…
…00010110111111
321200000121002222
412203230112333
5211131120111
614530035555
72504104052
oct643542677
9250017088
10110020031
1157115750
1230a18bbb
1319a41514
141087ca99
1599d37db
hex68ec5bf

110020031 has 4 divisors (see below), whose sum is σ = 120021864. Its totient is φ = 100018200.

The previous prime is 110020003. The next prime is 110020049. The reversal of 110020031 is 130020011.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-110020031 is a prime.

It is a super-2 number, since 2×1100200312 = 24208814442481922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (110020081) 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 3 ways as a sum of consecutive naturals, for example, 5000900 + ... + 5000921.

It is an arithmetic number, because the mean of its divisors is an integer number (30005466).

Almost surely, 2110020031 is an apocalyptic number.

110020031 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

110020031 is a deficient number, since it is larger than the sum of its proper divisors (10001833).

110020031 is a wasteful number, since it uses less digits than its factorization.

110020031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10001832.

The product of its (nonzero) digits is 6, while the sum is 8.

The square root of 110020031 is about 10489.0433786881. The cubic root of 110020031 is about 479.1710678596.

Adding to 110020031 its reverse (130020011), we get a palindrome (240040042).

The spelling of 110020031 in words is "one hundred ten million, twenty thousand, thirty-one".

Divisors: 1 11 10001821 110020031