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30133131210 = 232571317229439
BaseRepresentation
bin11100000100000100…
…110001011111001010
32212210000210200001200
4130010010301133022
5443203040144320
621502025325030
72114504250330
oct340404613712
985700720050
1030133131210
1111863404526
125a0b636776
132ac2b38b70
14165bdc1b50
15bb5675290
hex7041317ca

30133131210 has 576 divisors, whose sum is σ = 106205299200. Its totient is φ = 5764276224.

The previous prime is 30133131163. The next prime is 30133131211. The reversal of 30133131210 is 1213133103.

It is a happy number.

30133131210 is a `hidden beast` number, since 301 + 331 + 31 + 2 + 1 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (30133131211) by changing a digit.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 68640171 + ... + 68640609.

It is an arithmetic number, because the mean of its divisors is an integer number (184384200).

Almost surely, 230133131210 is an apocalyptic number.

30133131210 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 30133131210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53102649600).

30133131210 is an abundant number, since it is smaller than the sum of its proper divisors (76072167990).

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

30133131210 is a wasteful number, since it uses less digits than its factorization.

30133131210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 535 (or 515 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

Adding to 30133131210 its reverse (1213133103), we get a palindrome (31346264313).

The spelling of 30133131210 in words is "thirty billion, one hundred thirty-three million, one hundred thirty-one thousand, two hundred ten".