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30013013231 = 1131491782563
BaseRepresentation
bin11011111100111010…
…100011110011101111
32212110122210001011122
4123330322203303233
5442431312410411
621442055011155
72111515255205
oct337472436357
985418701148
1030013013231
1111801622073
125997369abb
132aa3ca0336
14164a075075
15ba9d499db
hex6fcea3cef

30013013231 has 8 divisors (see below), whose sum is σ = 30481844400. Its totient is φ = 29547747712.

The previous prime is 30013013213. The next prime is 30013013243. The reversal of 30013013231 is 13231031003.

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 30013013231 - 26 = 30013013167 is a prime.

It is a super-2 number, since 2×300130132312 (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 (30013013431) 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, 874445 + ... + 908118.

It is an arithmetic number, because the mean of its divisors is an integer number (3810230550).

Almost surely, 230013013231 is an apocalyptic number.

30013013231 is a deficient number, since it is larger than the sum of its proper divisors (468831169).

30013013231 is a wasteful number, since it uses less digits than its factorization.

30013013231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1782825.

The product of its (nonzero) digits is 162, while the sum is 17.

Adding to 30013013231 its reverse (13231031003), we get a palindrome (43244044234).

The spelling of 30013013231 in words is "thirty billion, thirteen million, thirteen thousand, two hundred thirty-one".

Divisors: 1 113 149 16837 1782563 201429619 265601887 30013013231