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230031054 = 232117116363
BaseRepresentation
bin11011011010111…
…11111011001110
3121000211210021200
431231133323032
5432341443204
634454210330
75462142321
oct1555377316
9530753250
10230031054
11108934810
12650539a6
1338870466
142279c7b8
15152dc539
hexdb5fece

230031054 has 48 divisors (see below), whose sum is σ = 551401344. Its totient is φ = 68720400.

The previous prime is 230031031. The next prime is 230031059. The reversal of 230031054 is 450130032.

230031054 is a `hidden beast` number, since 2 + 300 + 310 + 54 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230031059) 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, 5877 + ... + 22239.

It is an arithmetic number, because the mean of its divisors is an integer number (11487528).

Almost surely, 2230031054 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 230031054, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (275700672).

230031054 is an abundant number, since it is smaller than the sum of its proper divisors (321370290).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

230031054 is a wasteful number, since it uses less digits than its factorization.

230031054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16453 (or 16450 counting only the distinct ones).

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

The square root of 230031054 is about 15166.7746736081. The cubic root of 230031054 is about 612.7201409993.

Adding to 230031054 its reverse (450130032), we get a palindrome (680161086).

The spelling of 230031054 in words is "two hundred thirty million, thirty-one thousand, fifty-four".

Divisors: 1 2 3 6 9 11 18 22 33 66 71 99 142 198 213 426 639 781 1278 1562 2343 4686 7029 14058 16363 32726 49089 98178 147267 179993 294534 359986 539979 1079958 1161773 1619937 2323546 3239874 3485319 6970638 10455957 12779503 20911914 25559006 38338509 76677018 115015527 230031054