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30031220323 = 136734479013
BaseRepresentation
bin11011111110000000…
…000000111001100011
32212111221001001121101
4123332000000321203
5443000443022243
621443545135231
72112126106126
oct337600007143
985457031541
1030031220323
1111810928355
1259a148a517
132aa79a6670
14164c6543bd
15bab74454d
hex6fe000e63

30031220323 has 8 divisors (see below), whose sum is σ = 32824021328. Its totient is φ = 27307377504.

The previous prime is 30031220321. The next prime is 30031220327. The reversal of 30031220323 is 32302213003.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 30031220323 - 21 = 30031220321 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 30031220323.

It is not an unprimeable number, because it can be changed into a prime (30031220321) 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, 17238636 + ... + 17240377.

It is an arithmetic number, because the mean of its divisors is an integer number (4103002666).

Almost surely, 230031220323 is an apocalyptic number.

30031220323 is a deficient number, since it is larger than the sum of its proper divisors (2792801005).

30031220323 is a wasteful number, since it uses less digits than its factorization.

30031220323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34479093.

The product of its (nonzero) digits is 648, while the sum is 19.

Adding to 30031220323 its reverse (32302213003), we get a palindrome (62333433326).

The spelling of 30031220323 in words is "thirty billion, thirty-one million, two hundred twenty thousand, three hundred twenty-three".

Divisors: 1 13 67 871 34479013 448227169 2310093871 30031220323