Search a number
-
+
1210431142220 = 22585991177339
BaseRepresentation
bin10001100111010011010…
…100010111100101001100
311021201100000202001001012
4101213103110113211030
5124312430333022340
62324021524104352
7153310416643256
oct21472324274514
94251300661035
101210431142220
11427382907693
1217670ab350b8
138a1b26cb601
1442829a3acd6
152174585e565
hex119d351794c

1210431142220 has 48 divisors (see below), whose sum is σ = 2547690969600. Its totient is φ = 483071709120.

The previous prime is 1210431142213. The next prime is 1210431142231. The reversal of 1210431142220 is 222411340121.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15612311 + ... + 15689649.

It is an arithmetic number, because the mean of its divisors is an integer number (53076895200).

Almost surely, 21210431142220 is an apocalyptic number.

1210431142220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1210431142220 is an abundant number, since it is smaller than the sum of its proper divisors (1337259827380).

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

1210431142220 is a wasteful number, since it uses less digits than its factorization.

1210431142220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79118 (or 79116 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 1210431142220 its reverse (222411340121), we get a palindrome (1432842482341).

The spelling of 1210431142220 in words is "one trillion, two hundred ten billion, four hundred thirty-one million, one hundred forty-two thousand, two hundred twenty".

Divisors: 1 2 4 5 10 20 859 911 1718 1822 3436 3644 4295 4555 8590 9110 17180 18220 77339 154678 309356 386695 773390 782549 1546780 1565098 3130196 3912745 7825490 15650980 66434201 70455829 132868402 140911658 265736804 281823316 332171005 352279145 664342010 704558290 1328684020 1409116580 60521557111 121043114222 242086228444 302607785555 605215571110 1210431142220