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230031000 = 23325361419
BaseRepresentation
bin11011011010111…
…11111010011000
3121000211210012200
431231133322120
5432341443000
634454210200
75462142213
oct1555377230
9530753180
10230031000
11108934771
1265053960
1338870424
142279c77a
15152dc500
hexdb5fe98

230031000 has 192 divisors, whose sum is σ = 792136800. Its totient is φ = 60192000.

The previous prime is 230030993. The next prime is 230031017. The reversal of 230031000 is 130032.

It is a happy number.

It is a super-2 number, since 2×2300310002 = 105828521922000000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 548791 + ... + 549209.

Almost surely, 2230031000 is an apocalyptic number.

230031000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 230031000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (396068400).

230031000 is an abundant number, since it is smaller than the sum of its proper divisors (562105800).

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

230031000 is a wasteful number, since it uses less digits than its factorization.

230031000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 507 (or 490 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 9.

The square root of 230031000 is about 15166.7728934009. The cubic root of 230031000 is about 612.7200930538.

Adding to 230031000 its reverse (130032), we get a palindrome (230161032).

The spelling of 230031000 in words is "two hundred thirty million, thirty-one thousand".