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1230312141 = 32811168559
BaseRepresentation
bin100100101010101…
…0001001011001101
310011202001022222100
41021111101023031
510004424442031
6322025505313
742326323602
oct11125211315
93152038870
101230312141
1158152a7a3
122a4042239
13167b78566
14b95806a9
1573026de6
hex495512cd

1230312141 has 12 divisors (see below), whose sum is σ = 1779319360. Its totient is φ = 819191880.

The previous prime is 1230312043. The next prime is 1230312157. The reversal of 1230312141 is 1412130321.

It is not a de Polignac number, because 1230312141 - 211 = 1230310093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1230312541) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 76981 + ... + 91578.

Almost surely, 21230312141 is an apocalyptic number.

It is an amenable number.

1230312141 is a deficient number, since it is larger than the sum of its proper divisors (549007219).

1230312141 is a wasteful number, since it uses less digits than its factorization.

1230312141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169376 (or 169373 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 1230312141 is about 35075.8056357940. The cubic root of 1230312141 is about 1071.5318963744.

Adding to 1230312141 its reverse (1412130321), we get a palindrome (2642442462).

The spelling of 1230312141 in words is "one billion, two hundred thirty million, three hundred twelve thousand, one hundred forty-one".

Divisors: 1 3 9 811 2433 7299 168559 505677 1517031 136701349 410104047 1230312141