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11001210031 = 71571601433
BaseRepresentation
bin10100011111011100…
…10010010010101111
31001101200201101002101
422033232102102233
5140012302210111
65015350035531
7536422512430
oct121756222257
931350641071
1011001210031
114735994a19
122170348ba7
13106425c346
14765107487
15445c2cbc1
hex28fb924af

11001210031 has 4 divisors (see below), whose sum is σ = 12572811472. Its totient is φ = 9429608592.

The previous prime is 11001210019. The next prime is 11001210047. The reversal of 11001210031 is 13001210011.

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

It is a cyclic number.

It is not a de Polignac number, because 11001210031 - 211 = 11001207983 is a prime.

It is a super-3 number, since 3×110012100313 (a number of 31 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11001210071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 785800710 + ... + 785800723.

It is an arithmetic number, because the mean of its divisors is an integer number (3143202868).

Almost surely, 211001210031 is an apocalyptic number.

11001210031 is a deficient number, since it is larger than the sum of its proper divisors (1571601441).

11001210031 is an equidigital number, since it uses as much as digits as its factorization.

11001210031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1571601440.

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

Adding to 11001210031 its reverse (13001210011), we get a palindrome (24002420042).

The spelling of 11001210031 in words is "eleven billion, one million, two hundred ten thousand, thirty-one".

Divisors: 1 7 1571601433 11001210031