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31301300030 = 2571131343601
BaseRepresentation
bin11101001001101100…
…111110111100111110
32222210102220210102112
4131021230332330332
51003101113100110
622213555254022
72155450442330
oct351154767476
988712823375
1031301300030
111230284a000
1260968aa312
132c4ab66a10
14172d1c7450
15c32ec4405
hex749b3ef3e

31301300030 has 256 divisors, whose sum is σ = 78177318912. Its totient is φ = 8781696000.

The previous prime is 31301300027. The next prime is 31301300039. The reversal of 31301300030 is 3000310313.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 31301299978 and 31301300014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31301300039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 52081730 + ... + 52082330.

It is an arithmetic number, because the mean of its divisors is an integer number (305380152).

Almost surely, 231301300030 is an apocalyptic number.

31301300030 is an abundant number, since it is smaller than the sum of its proper divisors (46876018882).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31301300030 is a wasteful number, since it uses less digits than its factorization.

31301300030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 704 (or 682 counting only the distinct ones).

The product of its (nonzero) digits is 81, while the sum is 14.

Adding to 31301300030 its reverse (3000310313), we get a palindrome (34301610343).

The spelling of 31301300030 in words is "thirty-one billion, three hundred one million, three hundred thousand, thirty".