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1230313530 = 23573561787
BaseRepresentation
bin100100101010101…
…0001100000111010
310011202001101212210
41021111101200322
510004430013110
6322025515550
742326330625
oct11125214072
93152041783
101230313530
11581530846
122a4042bb6
13167b79094
14b9580dbc
1573027520
hex4955183a

1230313530 has 32 divisors (see below), whose sum is σ = 2993206464. Its totient is φ = 323588736.

The previous prime is 1230313519. The next prime is 1230313541. The reversal of 1230313530 is 353130321.

It is an interprime number because it is at equal distance from previous prime (1230313519) and next prime (1230313541).

It is a junction number, because it is equal to n+sod(n) for n = 1230313497 and 1230313506.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 278704 + ... + 283083.

It is an arithmetic number, because the mean of its divisors is an integer number (93537702).

Almost surely, 21230313530 is an apocalyptic number.

1230313530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1230313530 is an abundant number, since it is smaller than the sum of its proper divisors (1762892934).

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

1230313530 is a wasteful number, since it uses less digits than its factorization.

1230313530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 561870.

The product of its (nonzero) digits is 810, while the sum is 21.

The square root of 1230313530 is about 35075.8254357613. The cubic root of 1230313530 is about 1071.5322996209.

Adding to 1230313530 its reverse (353130321), we get a palindrome (1583443851).

The spelling of 1230313530 in words is "one billion, two hundred thirty million, three hundred thirteen thousand, five hundred thirty".

Divisors: 1 2 3 5 6 10 15 30 73 146 219 365 438 730 1095 2190 561787 1123574 1685361 2808935 3370722 5617870 8426805 16853610 41010451 82020902 123031353 205052255 246062706 410104510 615156765 1230313530