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30531330304000 = 21153157759637
BaseRepresentation
bin1101111000100101000010…
…00110001110100000000000
311000002202200220101211010021
412330102201012032200000
513000211131024212000
6144533522143343224
76300546553431001
oct674224106164000
9130082626354107
1030531330304000
1198012a0008679
1235112148b1b14
13140612743a536
14777a1d5871a8
1537e2cb21011a
hex1bc4a118e800

30531330304000 has 192 divisors, whose sum is σ = 76672967651280. Its totient is φ = 12134729318400.

The previous prime is 30531330303961. The next prime is 30531330304037. The reversal of 30531330304000 is 40303313503.

It can be written as a sum of positive squares in 8 ways, for example, as 32307905536 + 30499022398464 = 179744^2 + 5522592^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39812182 + ... + 40571818.

Almost surely, 230531330304000 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30531330304000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38336483825640).

30531330304000 is an abundant number, since it is smaller than the sum of its proper divisors (46141637347280).

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

30531330304000 is an equidigital number, since it uses as much as digits as its factorization.

30531330304000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 759831 (or 759801 counting only the distinct ones).

The product of its (nonzero) digits is 4860, while the sum is 25.

Adding to 30531330304000 its reverse (40303313503), we get a palindrome (30571633617503).

The spelling of 30531330304000 in words is "thirty trillion, five hundred thirty-one billion, three hundred thirty million, three hundred four thousand".