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1112031021 = 31006736821
BaseRepresentation
bin100001001001000…
…0011111100101101
32212111111000210010
41002102003330231
54234134443041
6302202403433
736362051643
oct10222037455
92774430703
101112031021
11520792402
12270500579
13149503b2a
14a7991193
1567960a16
hex42483f2d

1112031021 has 8 divisors (see below), whose sum is σ = 1482895584. Its totient is φ = 741260240.

The previous prime is 1112030999. The next prime is 1112031043. The reversal of 1112031021 is 1201302111.

It is an interprime number because it is at equal distance from previous prime (1112030999) and next prime (1112031043).

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 1112031021 - 217 = 1111899949 is a prime.

It is a super-2 number, since 2×11120310212 = 2473225983332604882, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1112030988 and 1112031006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1112031061) 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, 11791 + ... + 48611.

It is an arithmetic number, because the mean of its divisors is an integer number (185361948).

Almost surely, 21112031021 is an apocalyptic number.

It is an amenable number.

1112031021 is a deficient number, since it is larger than the sum of its proper divisors (370864563).

1112031021 is a wasteful number, since it uses less digits than its factorization.

1112031021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46891.

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

The square root of 1112031021 is about 33347.1291268079. The cubic root of 1112031021 is about 1036.0299271951.

Adding to 1112031021 its reverse (1201302111), we get a palindrome (2313333132).

The spelling of 1112031021 in words is "one billion, one hundred twelve million, thirty-one thousand, twenty-one".

Divisors: 1 3 10067 30201 36821 110463 370677007 1112031021