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30320213 = 7111033823
BaseRepresentation
bin111001110101…
…0011001010101
32010001102111212
41303222121111
530230221323
63001511205
7515501060
oct163523125
963042455
1030320213
111612a030
12a1a2505
136387971
1440538d7
1529ddb78
hex1cea655

30320213 has 16 divisors (see below), whose sum is σ = 38178816. Its totient is φ = 23390640.

The previous prime is 30320207. The next prime is 30320239. The reversal of 30320213 is 31202303.

It is not a de Polignac number, because 30320213 - 214 = 30303829 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30320243) 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, 6020 + ... + 9842.

It is an arithmetic number, because the mean of its divisors is an integer number (2386176).

Almost surely, 230320213 is an apocalyptic number.

It is an amenable number.

30320213 is a deficient number, since it is larger than the sum of its proper divisors (7858603).

30320213 is a wasteful number, since it uses less digits than its factorization.

30320213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3944.

The product of its (nonzero) digits is 108, while the sum is 14.

The square root of 30320213 is about 5506.3793004115. The cubic root of 30320213 is about 311.8248695267.

Adding to 30320213 its reverse (31202303), we get a palindrome (61522516).

The spelling of 30320213 in words is "thirty million, three hundred twenty thousand, two hundred thirteen".

Divisors: 1 7 11 77 103 721 1133 3823 7931 26761 42053 294371 393769 2756383 4331459 30320213