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1010001131 = 7879128189
BaseRepresentation
bin111100001100110…
…110010011101011
32121101111101002022
4330030312103223
54032030014011
6244115455055
734012603466
oct7414662353
92541441068
101010001131
11479134887
122422b748b
1313132c409
14981d22dd
155da098db
hex3c3364eb

1010001131 has 4 divisors (see below), whose sum is σ = 1010137200. Its totient is φ = 1009865064.

The previous prime is 1010001101. The next prime is 1010001133. The reversal of 1010001131 is 1311000101.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1311000101 = 1777117653.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-1010001131 is a prime.

It is a super-2 number, since 2×10100011312 = 2040204569242558322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1010001133) 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, 56216 + ... + 71973.

It is an arithmetic number, because the mean of its divisors is an integer number (252534300).

Almost surely, 21010001131 is an apocalyptic number.

1010001131 is a deficient number, since it is larger than the sum of its proper divisors (136069).

1010001131 is an equidigital number, since it uses as much as digits as its factorization.

1010001131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136068.

The product of its (nonzero) digits is 3, while the sum is 8.

The square root of 1010001131 is about 31780.5149580683. The cubic root of 1010001131 is about 1003.3226580494.

Adding to 1010001131 its reverse (1311000101), we get a palindrome (2321001232).

The spelling of 1010001131 in words is "one billion, ten million, one thousand, one hundred thirty-one".

Divisors: 1 7879 128189 1010001131