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11312342020 = 2257283285521
BaseRepresentation
bin10101000100100010…
…01010010000000100
31002012101011111221101
422202101022100010
5141131424421040
65110302425444
7550221214660
oct124221122004
932171144841
1011312342020
114885581aa1
122238592284
1310b3857005
147945778a0
154631da09a
hex2a244a404

11312342020 has 48 divisors (see below), whose sum is σ = 27245651328. Its totient is φ = 3864798720.

The previous prime is 11312342017. The next prime is 11312342033. The reversal of 11312342020 is 2024321311.

It is a happy 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, 103141 + ... + 182380.

It is an arithmetic number, because the mean of its divisors is an integer number (567617736).

Almost surely, 211312342020 is an apocalyptic number.

11312342020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11312342020 is an abundant number, since it is smaller than the sum of its proper divisors (15933309308).

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

11312342020 is a wasteful number, since it uses less digits than its factorization.

11312342020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285820 (or 285818 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 11312342020 its reverse (2024321311), we get a palindrome (13336663331).

The spelling of 11312342020 in words is "eleven billion, three hundred twelve million, three hundred forty-two thousand, twenty".

Divisors: 1 2 4 5 7 10 14 20 28 35 70 140 283 566 1132 1415 1981 2830 3962 5660 7924 9905 19810 39620 285521 571042 1142084 1427605 1998647 2855210 3997294 5710420 7994588 9993235 19986470 39972940 80802443 161604886 323209772 404012215 565617101 808024430 1131234202 1616048860 2262468404 2828085505 5656171010 11312342020