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2111131231310 = 256111491301181
BaseRepresentation
bin11110101110001001001…
…110100010010001001110
321110211012100212022222002
4132232021032202101032
5234042044043400220
64253501300552302
7305344541246003
oct36561116422116
97424170768862
102111131231310
117443645a7802
122a11996b2692
131241042284ca
1474271dc18aa
1539dae579c75
hex1eb893a244e

2111131231310 has 32 divisors (see below), whose sum is σ = 3862680835104. Its totient is φ = 830533968000.

The previous prime is 2111131231271. The next prime is 2111131231333. The reversal of 2111131231310 is 131321311112.

It is a super-2 number, since 2×21111312313102 (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 15 ways as a sum of consecutive naturals, for example, 6858920 + ... + 7160100.

It is an arithmetic number, because the mean of its divisors is an integer number (120708776097).

Almost surely, 22111131231310 is an apocalyptic number.

2111131231310 is a deficient number, since it is larger than the sum of its proper divisors (1751549603794).

2111131231310 is a wasteful number, since it uses less digits than its factorization.

2111131231310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312740.

The product of its (nonzero) digits is 108, while the sum is 20.

Adding to 2111131231310 its reverse (131321311112), we get a palindrome (2242452542422).

The spelling of 2111131231310 in words is "two trillion, one hundred eleven billion, one hundred thirty-one million, two hundred thirty-one thousand, three hundred ten".

Divisors: 1 2 5 10 61 122 305 610 11491 22982 57455 114910 301181 602362 700951 1401902 1505905 3011810 3504755 7009510 18372041 36744082 91860205 183720410 3460870871 6921741742 17304354355 34608708710 211113123131 422226246262 1055565615655 2111131231310