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30231332231 = 192336828853
BaseRepresentation
bin11100001001111011…
…011000010110000111
32220000212120210112112
4130021323120112013
5443403210112411
621515454211235
72120106040562
oct341173302607
986025523475
1030231332231
11119038873a1
125a384b3b1b
132b0a29c889
14166b0654d9
15bbe0c1b8b
hex709ed8587

30231332231 has 8 divisors (see below), whose sum is σ = 31959036720. Its totient is φ = 28517285952.

The previous prime is 30231332177. The next prime is 30231332239. The reversal of 30231332231 is 13223313203.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-30231332231 is a prime.

It is a super-2 number, since 2×302313322312 (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30231332197 and 30231332206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30231332239) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3410000 + ... + 3418853.

It is an arithmetic number, because the mean of its divisors is an integer number (3994879590).

Almost surely, 230231332231 is an apocalyptic number.

30231332231 is a deficient number, since it is larger than the sum of its proper divisors (1727704489).

30231332231 is a wasteful number, since it uses less digits than its factorization.

30231332231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6829105.

The product of its (nonzero) digits is 1944, while the sum is 23.

Adding to 30231332231 its reverse (13223313203), we get a palindrome (43454645434).

The spelling of 30231332231 in words is "thirty billion, two hundred thirty-one million, three hundred thirty-two thousand, two hundred thirty-one".

Divisors: 1 19 233 4427 6828853 129748207 1591122749 30231332231