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11112031 = 78531861
BaseRepresentation
bin101010011000…
…111001011111
3202220112211201
4222120321133
510321041111
61034100331
7163310410
oct52307137
922815751
1011112031
1162aa6a7
12387a6a7
1323c0a88
141693807
15e976c1
hexa98e5f

11112031 has 8 divisors (see below), whose sum is σ = 12721184. Its totient is φ = 9508320.

The previous prime is 11112019. The next prime is 11112037. The reversal of 11112031 is 13021111.

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

It is a cyclic number.

It is not a de Polignac number, because 11112031 - 211 = 11109983 is a prime.

It is a super-2 number, since 2×111120312 = 246954465889922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11111999 and 11112017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11112037) 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, 5041 + ... + 6901.

It is an arithmetic number, because the mean of its divisors is an integer number (1590148).

Almost surely, 211112031 is an apocalyptic number.

11112031 is a deficient number, since it is larger than the sum of its proper divisors (1609153).

11112031 is an equidigital number, since it uses as much as digits as its factorization.

11112031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2721.

The product of its (nonzero) digits is 6, while the sum is 10.

The square root of 11112031 is about 3333.4713138109. The cubic root of 11112031 is about 223.1504745634.

Adding to 11112031 its reverse (13021111), we get a palindrome (24133142).

The spelling of 11112031 in words is "eleven million, one hundred twelve thousand, thirty-one".

Divisors: 1 7 853 1861 5971 13027 1587433 11112031