Search a number
-
+
1230231012 = 223102519251
BaseRepresentation
bin100100101010011…
…1101010111100100
310011201220012200120
41021110331113210
510004414343022
6322024041540
742325535223
oct11124752744
93151805616
101230231012
1158148484a
122a40032b0
13167b4a65a
14b955ccba
157300cd5c
hex4953d5e4

1230231012 has 12 divisors (see below), whose sum is σ = 2870539056. Its totient is φ = 410077000.

The previous prime is 1230230999. The next prime is 1230231029. The reversal of 1230231012 is 2101320321.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 1230230982 and 1230231000.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51259614 + ... + 51259637.

It is an arithmetic number, because the mean of its divisors is an integer number (239211588).

Almost surely, 21230231012 is an apocalyptic number.

1230231012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1230231012 is an abundant number, since it is smaller than the sum of its proper divisors (1640308044).

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

1230231012 is a wasteful number, since it uses less digits than its factorization.

1230231012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102519258 (or 102519256 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 1230231012 is about 35074.6491358075. The cubic root of 1230231012 is about 1071.5083429419.

Adding to 1230231012 its reverse (2101320321), we get a palindrome (3331551333).

The spelling of 1230231012 in words is "one billion, two hundred thirty million, two hundred thirty-one thousand, twelve".

Divisors: 1 2 3 4 6 12 102519251 205038502 307557753 410077004 615115506 1230231012