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1230310000 = 2454123031
BaseRepresentation
bin100100101010101…
…0000101001110000
310011202001020001001
41021111100221300
510004424410000
6322025451344
742326314423
oct11125205160
93152036031
101230310000
11581529127
122a4040b54
13167b775aa
14b957d9ba
157302646a
hex49550a70

1230310000 has 50 divisors (see below), whose sum is σ = 2978727752. Its totient is φ = 492120000.

The previous prime is 1230309973. The next prime is 1230310013. The reversal of 1230310000 is 130321.

It is a tau number, because it is divible by the number of its divisors (50).

It is a super-2 number, since 2×12303100002 = 3027325392200000000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 51516 + ... + 71515.

Almost surely, 21230310000 is an apocalyptic number.

1230310000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1230310000 is an abundant number, since it is smaller than the sum of its proper divisors (1748417752).

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

1230310000 is an equidigital number, since it uses as much as digits as its factorization.

1230310000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123059 (or 123038 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 10.

The square root of 1230310000 is about 35075.7751161681. The cubic root of 1230310000 is about 1071.5312748110.

Adding to 1230310000 its reverse (130321), we get a palindrome (1230440321).

The spelling of 1230310000 in words is "one billion, two hundred thirty million, three hundred ten thousand".

Divisors: 1 2 4 5 8 10 16 20 25 40 50 80 100 125 200 250 400 500 625 1000 1250 2000 2500 5000 10000 123031 246062 492124 615155 984248 1230310 1968496 2460620 3075775 4921240 6151550 9842480 12303100 15378875 24606200 30757750 49212400 61515500 76894375 123031000 153788750 246062000 307577500 615155000 1230310000