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30223031131 = 1915761716421
BaseRepresentation
bin11100001001011011…
…101101101101011011
32220000021222001120101
4130021123231231123
5443344043444011
621515000240231
72116645345246
oct341133555533
986007861511
1030223031131
11118aa127687
125a35770077
132b08654397
141669d0425d
15bbd4d22c1
hex7096edb5b

30223031131 has 16 divisors (see below), whose sum is σ = 32070195360. Its totient is φ = 28402133760.

The previous prime is 30223031119. The next prime is 30223031191. The reversal of 30223031131 is 13113032203.

It is a cyclic number.

It is not a de Polignac number, because 30223031131 - 213 = 30223022939 is a prime.

It is a super-2 number, since 2×302230311312 (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30223031099 and 30223031108.

It is not an unprimeable number, because it can be changed into a prime (30223031101) 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, 1832301 + ... + 1848721.

It is an arithmetic number, because the mean of its divisors is an integer number (2004387210).

Almost surely, 230223031131 is an apocalyptic number.

30223031131 is a deficient number, since it is larger than the sum of its proper divisors (1847164229).

30223031131 is a wasteful number, since it uses less digits than its factorization.

30223031131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17214.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 30223031131 its reverse (13113032203), we get a palindrome (43336063334).

The spelling of 30223031131 in words is "thirty billion, two hundred twenty-three million, thirty-one thousand, one hundred thirty-one".

Divisors: 1 19 157 617 2983 11723 16421 96869 311999 1840511 2578097 10131757 48983843 192503383 1590685849 30223031131