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230023311 = 37174713709
BaseRepresentation
bin11011011010111…
…10000010001111
3121000211101122220
431231132002033
5432341221221
634454110423
75462110620
oct1555360217
9530741586
10230023311
11108929a11
126504b413
1338869a8b
1422799a47
15152da0c6
hexdb5e08f

230023311 has 32 divisors (see below), whose sum is σ = 379054080. Its totient is φ = 121069056.

The previous prime is 230023309. The next prime is 230023319. The reversal of 230023311 is 113320032.

It is not a de Polignac number, because 230023311 - 21 = 230023309 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230023319) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9925 + ... + 23633.

It is an arithmetic number, because the mean of its divisors is an integer number (11845440).

Almost surely, 2230023311 is an apocalyptic number.

230023311 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

230023311 is a deficient number, since it is larger than the sum of its proper divisors (149030769).

230023311 is a wasteful number, since it uses less digits than its factorization.

230023311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13783.

The product of its (nonzero) digits is 108, while the sum is 15.

The square root of 230023311 is about 15166.5194095415. The cubic root of 230023311 is about 612.7132660648.

Adding to 230023311 its reverse (113320032), we get a palindrome (343343343).

The spelling of 230023311 in words is "two hundred thirty million, twenty-three thousand, three hundred eleven".

Divisors: 1 3 7 17 21 47 51 119 141 329 357 799 987 2397 5593 13709 16779 41127 95963 233053 287889 644323 699159 1631371 1932969 4510261 4894113 10953491 13530783 32860473 76674437 230023311