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23131412131 = 432771942021
BaseRepresentation
bin10101100010101111…
…010101011010100011
32012201001211111010211
4111202233111122203
5334333120142011
614343150234551
71446134521222
oct254257253243
965631744124
1023131412131
1198a0096333
1245967b5a57
132248380619
141196138cb9
15905b1bb21
hex562bd56a3

23131412131 has 8 divisors (see below), whose sum is σ = 23754813104. Its totient is φ = 22511895840.

The previous prime is 23131412111. The next prime is 23131412149. The reversal of 23131412131 is 13121413132.

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 23131412131 - 25 = 23131412099 is a prime.

It is a super-2 number, since 2×231314121312 (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23131412111) 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 7 ways as a sum of consecutive naturals, for example, 959100 + ... + 982921.

It is an arithmetic number, because the mean of its divisors is an integer number (2969351638).

Almost surely, 223131412131 is an apocalyptic number.

23131412131 is a deficient number, since it is larger than the sum of its proper divisors (623400973).

23131412131 is a wasteful number, since it uses less digits than its factorization.

23131412131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1942341.

The product of its digits is 432, while the sum is 22.

Adding to 23131412131 its reverse (13121413132), we get a palindrome (36252825263).

The spelling of 23131412131 in words is "twenty-three billion, one hundred thirty-one million, four hundred twelve thousand, one hundred thirty-one".

Divisors: 1 43 277 11911 1942021 83506903 537939817 23131412131