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131003110021 = 726969571487
BaseRepresentation
bin111101000000001100…
…1001101001010000101
3110112010211110111212211
41322000121031022011
54121243244010041
6140103151143421
712315244030240
oct1720031151205
9415124414784
10131003110021
1150615927583
1221480814b71
13c479960464
1464aa7c6257
15361ae5b481
hex1e8064d285

131003110021 has 8 divisors (see below), whose sum is σ = 150274414080. Its totient is φ = 111870949488.

The previous prime is 131003110003. The next prime is 131003110079. The reversal of 131003110021 is 120011300131.

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 131003110021 - 25 = 131003109989 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 131003109983 and 131003110010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131003111021) 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, 34783861 + ... + 34787626.

It is an arithmetic number, because the mean of its divisors is an integer number (18784301760).

Almost surely, 2131003110021 is an apocalyptic number.

It is an amenable number.

131003110021 is a deficient number, since it is larger than the sum of its proper divisors (19271304059).

131003110021 is an equidigital number, since it uses as much as digits as its factorization.

131003110021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69571763.

The product of its (nonzero) digits is 18, while the sum is 13.

Adding to 131003110021 its reverse (120011300131), we get a palindrome (251014410152).

The spelling of 131003110021 in words is "one hundred thirty-one billion, three million, one hundred ten thousand, twenty-one".

Divisors: 1 7 269 1883 69571487 487000409 18714730003 131003110021