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30350320031 = 173432752009
BaseRepresentation
bin11100010001000001…
…010010000110011111
32220100011111000010002
4130101001102012133
5444124140220111
621535344404515
72123052315023
oct342101220637
986304430102
1030350320031
1111964a67719
125a7031673b
132b28b30b65
14167cb9a383
15bc977763b
hex71105219f

30350320031 has 8 divisors (see below), whose sum is σ = 32137187040. Its totient is φ = 28563625728.

The previous prime is 30350320019. The next prime is 30350320037. The reversal of 30350320031 is 13002305303.

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 30350320031 - 222 = 30346125727 is a prime.

It is a super-2 number, since 2×303503200312 (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 = 30350319985 and 30350320012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30350320037) 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, 557555 + ... + 609563.

It is an arithmetic number, because the mean of its divisors is an integer number (4017148380).

Almost surely, 230350320031 is an apocalyptic number.

30350320031 is a deficient number, since it is larger than the sum of its proper divisors (1786867009).

30350320031 is a wasteful number, since it uses less digits than its factorization.

30350320031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86353.

The product of its (nonzero) digits is 810, while the sum is 20.

Adding to 30350320031 its reverse (13002305303), we get a palindrome (43352625334).

The spelling of 30350320031 in words is "thirty billion, three hundred fifty million, three hundred twenty thousand, thirty-one".

Divisors: 1 17 34327 52009 583559 884153 1785312943 30350320031