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1011110023 = 71119691121
BaseRepresentation
bin111100010001000…
…101000010000111
32121110120201012101
4330101011002013
54032321010043
6244155332531
734025202430
oct7421050207
92543521171
101011110023
11479821a20
12242751147
1313162a071
1498400487
155db7824d
hex3c445087

1011110023 has 16 divisors (see below), whose sum is σ = 1326954240. Its totient is φ = 746409600.

The previous prime is 1011110021. The next prime is 1011110029. The reversal of 1011110023 is 3200111101.

It is a cyclic number.

It is not a de Polignac number, because 1011110023 - 21 = 1011110021 is a prime.

It is a super-2 number, since 2×10111100232 = 2044686957222121058, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1011109991 and 1011110009.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011110021) 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, 344098 + ... + 347023.

It is an arithmetic number, because the mean of its divisors is an integer number (82934640).

Almost surely, 21011110023 is an apocalyptic number.

1011110023 is a deficient number, since it is larger than the sum of its proper divisors (315844217).

1011110023 is a wasteful number, since it uses less digits than its factorization.

1011110023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 691158.

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

The square root of 1011110023 is about 31797.9562708046. The cubic root of 1011110023 is about 1003.6897102941.

Adding to 1011110023 its reverse (3200111101), we get a palindrome (4211221124).

The spelling of 1011110023 in words is "one billion, eleven million, one hundred ten thousand, twenty-three".

Divisors: 1 7 11 19 77 133 209 1463 691121 4837847 7602331 13131299 53216317 91919093 144444289 1011110023