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1201230030 = 23571113217181
BaseRepresentation
bin100011110011001…
…0101000011001110
310002201022210211010
41013212111003032
54430003330110
6315110310050
741524200240
oct10746250316
93081283733
101201230030
115670769a0
12296358326
13161b35300
14b5770090
15706d0020
hex479950ce

1201230030 has 384 divisors, whose sum is σ = 4143799296. Its totient is φ = 215654400.

The previous prime is 1201230011. The next prime is 1201230053. The reversal of 1201230030 is 300321021.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1201229988 and 1201230015.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 6636540 + ... + 6636720.

It is an arithmetic number, because the mean of its divisors is an integer number (10791144).

Almost surely, 21201230030 is an apocalyptic number.

1201230030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1201230030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2071899648).

1201230030 is an abundant number, since it is smaller than the sum of its proper divisors (2942569266).

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

1201230030 is a wasteful number, since it uses less digits than its factorization.

1201230030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252 (or 239 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 1201230030 is about 34658.7655579364. The cubic root of 1201230030 is about 1063.0215290632.

Adding to 1201230030 its reverse (300321021), we get a palindrome (1501551051).

Subtracting from 1201230030 its reverse (300321021), we obtain a palindrome (900909009).

The spelling of 1201230030 in words is "one billion, two hundred one million, two hundred thirty thousand, thirty".