Search a number
-
+
1213123232310 = 235117350357959
BaseRepresentation
bin10001101001110011110…
…001111000001000110110
311021222021122101101101120
4101221303301320020312
5124333434021413220
62325145013004410
7153434216223363
oct21516361701066
94258248341346
101213123232310
11428534490830
12177140623706
138a521375922
1442a033b146a
1521851d80a40
hex11a73c78236

1213123232310 has 64 divisors (see below), whose sum is σ = 3219686530560. Its totient is φ = 290061838080.

The previous prime is 1213123232297. The next prime is 1213123232327. The reversal of 1213123232310 is 132323213121.

It is a super-2 number, since 2×12131232323102 (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25154890 + ... + 25203069.

It is an arithmetic number, because the mean of its divisors is an integer number (50307602040).

Almost surely, 21213123232310 is an apocalyptic number.

1213123232310 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1213123232310 is an abundant number, since it is smaller than the sum of its proper divisors (2006563298250).

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

1213123232310 is a wasteful number, since it uses less digits than its factorization.

1213123232310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50358053.

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 1213123232310 its reverse (132323213121), we get a palindrome (1345446445431).

The spelling of 1213123232310 in words is "one trillion, two hundred thirteen billion, one hundred twenty-three million, two hundred thirty-two thousand, three hundred ten".

Divisors: 1 2 3 5 6 10 11 15 22 30 33 55 66 73 110 146 165 219 330 365 438 730 803 1095 1606 2190 2409 4015 4818 8030 12045 24090 50357959 100715918 151073877 251789795 302147754 503579590 553937549 755369385 1107875098 1510738770 1661812647 2769687745 3323625294 3676131007 5539375490 7352262014 8309063235 11028393021 16618126470 18380655035 22056786042 36761310070 40437441077 55141965105 80874882154 110283930210 121312323231 202187205385 242624646462 404374410770 606561616155 1213123232310