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542811131431 = 1297969743159
BaseRepresentation
bin1111110011000100001…
…00001000111000100111
31220220002102220112002221
413321202010020320213
532343134122201211
61053210342213211
754134236326532
oct7714204107047
91826072815087
10542811131431
1119a228807158
128924a424207
133c2577270ca
141c3b4cb1a19
15e1be302c71
hex7e62108e27

542811131431 has 8 divisors (see below), whose sum is σ = 543298252640. Its totient is φ = 542324118528.

The previous prime is 542811131383. The next prime is 542811131501. The reversal of 542811131431 is 134131118245.

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 542811131431 - 229 = 542274260519 is a prime.

It is a super-2 number, since 2×5428111314312 (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (542811131831) 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, 12555430 + ... + 12598588.

It is an arithmetic number, because the mean of its divisors is an integer number (67912281580).

Almost surely, 2542811131431 is an apocalyptic number.

542811131431 is a deficient number, since it is larger than the sum of its proper divisors (487121209).

542811131431 is a wasteful number, since it uses less digits than its factorization.

542811131431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54153.

The product of its digits is 11520, while the sum is 34.

Adding to 542811131431 its reverse (134131118245), we get a palindrome (676942249676).

The spelling of 542811131431 in words is "five hundred forty-two billion, eight hundred eleven million, one hundred thirty-one thousand, four hundred thirty-one".

Divisors: 1 1297 9697 43159 12577009 55977223 418512823 542811131431