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131211210013023 = 37211127771065829
BaseRepresentation
bin11101110101010111111101…
…100100000011100101011111
3122012120200001211100001200210
4131311113331210003211133
5114144231024230404043
61143021333040023503
736431461050020310
oct3565277544034537
9565520054301623
10131211210013023
11388983a8423a98
1212871740901b93
13582a21944929a
142458929424607
1510281884a9633
hex7755fd90395f

131211210013023 has 32 divisors (see below), whose sum is σ = 200107826012160. Its totient is φ = 74915259528960.

The previous prime is 131211210012989. The next prime is 131211210013031. The reversal of 131211210013023 is 320310012112131.

It is not a de Polignac number, because 131211210013023 - 26 = 131211210012959 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131211210013033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 122574273 + ... + 123640101.

It is an arithmetic number, because the mean of its divisors is an integer number (6253369562880).

Almost surely, 2131211210013023 is an apocalyptic number.

131211210013023 is a deficient number, since it is larger than the sum of its proper divisors (68896615999137).

131211210013023 is a wasteful number, since it uses less digits than its factorization.

131211210013023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1070727.

The product of its (nonzero) digits is 216, while the sum is 21.

Adding to 131211210013023 its reverse (320310012112131), we get a palindrome (451521222125154).

The spelling of 131211210013023 in words is "one hundred thirty-one trillion, two hundred eleven billion, two hundred ten million, thirteen thousand, twenty-three".

Divisors: 1 3 7 21 2111 2777 6333 8331 14777 19439 44331 58317 1065829 3197487 5862247 7460803 17586741 22382409 41035729 123107187 2249965019 2959807133 6749895057 8879421399 15749755133 20718649931 47249265399 62155949793 6248152857763 18744458573289 43737070004341 131211210013023