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230481001 = 19312511559
BaseRepresentation
bin11011011110011…
…01110001101001
3121001200122111101
431233031301221
5433000343001
634512001401
75466025162
oct1557156151
9531618441
10230481001
11109111873
1265230261
133899a1ba
1422878769
151537aa01
hexdbcdc69

230481001 has 16 divisors (see below), whose sum is σ = 251596800. Its totient is φ = 210330000.

The previous prime is 230480983. The next prime is 230481023. The reversal of 230481001 is 100184032.

It is not a de Polignac number, because 230481001 - 211 = 230478953 is a prime.

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

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 230481001.

It is not an unprimeable number, because it can be changed into a prime (230481071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 147060 + ... + 148618.

It is an arithmetic number, because the mean of its divisors is an integer number (15724800).

Almost surely, 2230481001 is an apocalyptic number.

It is an amenable number.

230481001 is a deficient number, since it is larger than the sum of its proper divisors (21115799).

230481001 is a wasteful number, since it uses less digits than its factorization.

230481001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1860.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 230481001 is about 15181.6007390525. The cubic root of 230481001 is about 613.1193798936.

The spelling of 230481001 in words is "two hundred thirty million, four hundred eighty-one thousand, one".

Divisors: 1 19 31 251 589 1559 4769 7781 29621 48329 147839 391309 918251 7434871 12130579 230481001