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230252013 = 32194728649
BaseRepresentation
bin11011011100101…
…01110111101101
3121001021000101100
431232111313231
5432421031023
634503033313
75464052445
oct1556256755
9531230340
10230252013
11108a75822
126513b839
1338919bc4
1422819125
1515332c43
hexdb95ded

230252013 has 24 divisors (see below), whose sum is σ = 357552000. Its totient is φ = 142323264.

The previous prime is 230251997. The next prime is 230252017. The reversal of 230252013 is 310252032.

It is not a de Polignac number, because 230252013 - 24 = 230251997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230252017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6288 + ... + 22361.

It is an arithmetic number, because the mean of its divisors is an integer number (14898000).

Almost surely, 2230252013 is an apocalyptic number.

It is an amenable number.

230252013 is a deficient number, since it is larger than the sum of its proper divisors (127299987).

230252013 is a wasteful number, since it uses less digits than its factorization.

230252013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28721 (or 28718 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 230252013 is about 15174.0572359537. The cubic root of 230252013 is about 612.9162633656.

The spelling of 230252013 in words is "two hundred thirty million, two hundred fifty-two thousand, thirteen".

Divisors: 1 3 9 19 47 57 141 171 423 893 2679 8037 28649 85947 257841 544331 1346503 1632993 4039509 4898979 12118527 25583557 76750671 230252013