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230315031 = 32172365449
BaseRepresentation
bin11011011101001…
…01010000010111
3121001101012211100
431232211100113
5432430040111
634504241143
75464434252
oct1556452027
9531335740
10230315031
11109009101
12651701b3
133893c7ab
1422834099
1515346756
hexdba5417

230315031 has 24 divisors (see below), whose sum is σ = 367567200. Its totient is φ = 138226176.

The previous prime is 230315023. The next prime is 230315053. The reversal of 230315031 is 130513032.

It is not a de Polignac number, because 230315031 - 23 = 230315023 is a prime.

It is a super-2 number, since 2×2303150312 = 106090027009061922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 230314995 and 230315013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230315021) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 29206 + ... + 36243.

It is an arithmetic number, because the mean of its divisors is an integer number (15315300).

Almost surely, 2230315031 is an apocalyptic number.

230315031 is a deficient number, since it is larger than the sum of its proper divisors (137252169).

230315031 is a wasteful number, since it uses less digits than its factorization.

230315031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65495 (or 65492 counting only the distinct ones).

The product of its (nonzero) digits is 270, while the sum is 18.

The square root of 230315031 is about 15176.1335985158. The cubic root of 230315031 is about 612.9721749055.

Adding to 230315031 its reverse (130513032), we get a palindrome (360828063).

The spelling of 230315031 in words is "two hundred thirty million, three hundred fifteen thousand, thirty-one".

Divisors: 1 3 9 17 23 51 69 153 207 391 1173 3519 65449 196347 589041 1112633 1505327 3337899 4515981 10013697 13547943 25590559 76771677 230315031