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31543030141 = 73895471889
BaseRepresentation
bin11101011000000111…
…000111000101111101
310000102021202221210121
4131120013013011331
51004100003431031
622253552334541
72164444222000
oct353007070575
9100367687717
1031543030141
1112417244457
126143844451
132c88c7219c
14175334d537
15c49323011
hex7581c717d

31543030141 has 32 divisors (see below), whose sum is σ = 37285920000. Its totient is φ = 26670099456.

The previous prime is 31543030121. The next prime is 31543030153. The reversal of 31543030141 is 14103034513.

It is not a de Polignac number, because 31543030141 - 211 = 31543028093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31543030121) 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 31 ways as a sum of consecutive naturals, for example, 16697325 + ... + 16699213.

It is an arithmetic number, because the mean of its divisors is an integer number (1165185000).

Almost surely, 231543030141 is an apocalyptic number.

It is an amenable number.

31543030141 is a deficient number, since it is larger than the sum of its proper divisors (5742889859).

31543030141 is an equidigital number, since it uses as much as digits as its factorization.

31543030141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2546 (or 2532 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 25.

Adding to 31543030141 its reverse (14103034513), we get a palindrome (45646064654).

The spelling of 31543030141 in words is "thirty-one billion, five hundred forty-three million, thirty thousand, one hundred forty-one".

Divisors: 1 7 49 89 343 547 623 1889 3829 4361 13223 26803 30527 48683 92561 168121 187621 340781 647927 1033283 1176847 2385467 7232981 8237929 16698269 50630867 57665503 91962187 354416069 643735309 4506147163 31543030141