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1311311341230 = 235113973670731
BaseRepresentation
bin10011000101010000001…
…111110010011010101110
311122100201112122010100020
4103011100033302122232
5132441031200404410
62442224052543010
7163511342330532
oct23052017623256
94570645563306
101311311341230
11466140080290
12192183621a66
139686b690a67
1447679941bc2
152419beb3a70
hex131503f26ae

1311311341230 has 32 divisors (see below), whose sum is σ = 3433251512448. Its totient is φ = 317893658400.

The previous prime is 1311311341211. The next prime is 1311311341259. The reversal of 1311311341230 is 321431131131.

It is a self number, because there is not a number n which added to its sum of digits gives 1311311341230.

It is a congruent number.

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, 1986835036 + ... + 1986835695.

It is an arithmetic number, because the mean of its divisors is an integer number (107289109764).

Almost surely, 21311311341230 is an apocalyptic number.

1311311341230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1311311341230 is an abundant number, since it is smaller than the sum of its proper divisors (2121940171218).

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

1311311341230 is a wasteful number, since it uses less digits than its factorization.

1311311341230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3973670752.

The product of its (nonzero) digits is 648, while the sum is 24.

Adding to 1311311341230 its reverse (321431131131), we get a palindrome (1632742472361).

The spelling of 1311311341230 in words is "one trillion, three hundred eleven billion, three hundred eleven million, three hundred forty-one thousand, two hundred thirty".

Divisors: 1 2 3 5 6 10 11 15 22 30 33 55 66 110 165 330 3973670731 7947341462 11921012193 19868353655 23842024386 39736707310 43710378041 59605060965 87420756082 119210121930 131131134123 218551890205 262262268246 437103780410 655655670615 1311311341230