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30020344231 = 311019588101
BaseRepresentation
bin11011111101010110…
…100001100110100111
32212111011120111102011
4123331112201212213
5442440202003411
621442520055051
72111634500323
oct337526414647
985434514364
1030020344231
1111805779a49
125999904487
132aa56690c7
14164b022983
15baa7e6c21
hex6fd5a19a7

30020344231 has 8 divisors (see below), whose sum is σ = 31295564928. Its totient is φ = 28764300000.

The previous prime is 30020344229. The next prime is 30020344241. The reversal of 30020344231 is 13244302003.

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 30020344231 - 21 = 30020344229 is a prime.

It is a super-2 number, since 2×300203442312 (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30020344241) 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, 4790920 + ... + 4797181.

It is an arithmetic number, because the mean of its divisors is an integer number (3911945616).

Almost surely, 230020344231 is an apocalyptic number.

30020344231 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

30020344231 is a deficient number, since it is larger than the sum of its proper divisors (1275220697).

30020344231 is a wasteful number, since it uses less digits than its factorization.

30020344231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9588233.

The product of its (nonzero) digits is 1728, while the sum is 22.

Adding to 30020344231 its reverse (13244302003), we get a palindrome (43264646234).

The spelling of 30020344231 in words is "thirty billion, twenty million, three hundred forty-four thousand, two hundred thirty-one".

Divisors: 1 31 101 3131 9588101 297231131 968398201 30020344231