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23131121130131 = 757143117134219
BaseRepresentation
bin1010100001001101000100…
…10000100001101010010011
310000220022110121021100010212
411100212202100201222103
511012440014002131011
6121110142414314335
74605111513343220
oct520464220415223
9100808417240125
1023131121130131
11740894293a573
122716b717b89ab
13cba342056a71
1459d7a349c947
152a1a60a9a08b
hex1509a2421a93

23131121130131 has 16 divisors (see below), whose sum is σ = 26482675464960. Its totient is φ = 19791346044960.

The previous prime is 23131121130127. The next prime is 23131121130179. The reversal of 23131121130131 is 13103112113132.

It is not a de Polignac number, because 23131121130131 - 22 = 23131121130127 is a prime.

It is a super-3 number, since 3×231311211301313 (a number of 41 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 junction number, because it is equal to n+sod(n) for n = 23131121130097 and 23131121130106.

It is not an unprimeable number, because it can be changed into a prime (23131121130101) 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 15 ways as a sum of consecutive naturals, for example, 172271540 + ... + 172405758.

It is an arithmetic number, because the mean of its divisors is an integer number (1655167216560).

Almost surely, 223131121130131 is an apocalyptic number.

23131121130131 is a deficient number, since it is larger than the sum of its proper divisors (3351554334829).

23131121130131 is a wasteful number, since it uses less digits than its factorization.

23131121130131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177914.

The product of its (nonzero) digits is 324, while the sum is 23.

Adding to 23131121130131 its reverse (13103112113132), we get a palindrome (36234233243263).

The spelling of 23131121130131 in words is "twenty-three trillion, one hundred thirty-one billion, one hundred twenty-one million, one hundred thirty thousand, one hundred thirty-one".

Divisors: 1 7 571 3997 43117 134219 301819 939533 24619807 76639049 172338649 536473343 5787120623 40509844361 3304445875733 23131121130131