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30031011213 = 372515697403
BaseRepresentation
bin11011111101111111…
…001101110110001101
32212111220122102202120
4123331333031312031
5443000414324323
621443540443153
72112124245360
oct337577156615
985456572676
1030031011213
11118107a5235
1259a13a94b9
132aa7932428
14164c5dc0d7
15bab7025e3
hex6fdfcdd8d

30031011213 has 16 divisors (see below), whose sum is σ = 45943865856. Its totient is φ = 17092206000.

The previous prime is 30031011211. The next prime is 30031011217. The reversal of 30031011213 is 31211013003.

It is not a de Polignac number, because 30031011213 - 21 = 30031011211 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 30031011192 and 30031011201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30031011211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2843431 + ... + 2853972.

It is an arithmetic number, because the mean of its divisors is an integer number (2871491616).

Almost surely, 230031011213 is an apocalyptic number.

It is an amenable number.

30031011213 is a deficient number, since it is larger than the sum of its proper divisors (15912854643).

30031011213 is a wasteful number, since it uses less digits than its factorization.

30031011213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5697664.

The product of its (nonzero) digits is 54, while the sum is 15.

Adding to 30031011213 its reverse (31211013003), we get a palindrome (61242024216).

The spelling of 30031011213 in words is "thirty billion, thirty-one million, eleven thousand, two hundred thirteen".

Divisors: 1 3 7 21 251 753 1757 5271 5697403 17092209 39881821 119645463 1430048153 4290144459 10010337071 30031011213