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1311075893020 = 225737911367053
BaseRepresentation
bin10011000101000010001…
…101100111111100011100
311122100010010121010010011
4103011002031213330130
5132440040412034040
62442144442253004
7163502453133565
oct23050215477434
94570103533104
101311075893020
1146602a186593
121921187b7164
13968319749aa
144765657316c
15241864a63ea
hex13142367f1c

1311075893020 has 48 divisors (see below), whose sum is σ = 2826304306560. Its totient is φ = 510698912256.

The previous prime is 1311075892999. The next prime is 1311075893041. The reversal of 1311075893020 is 203985701131.

It is an interprime number because it is at equal distance from previous prime (1311075892999) and next prime (1311075893041).

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, 5568187 + ... + 5798866.

It is an arithmetic number, because the mean of its divisors is an integer number (58881339720).

Almost surely, 21311075893020 is an apocalyptic number.

1311075893020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1311075893020 is an abundant number, since it is smaller than the sum of its proper divisors (1515228413540).

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

1311075893020 is a wasteful number, since it uses less digits than its factorization.

1311075893020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11367214 (or 11367212 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 40.

The spelling of 1311075893020 in words is "one trillion, three hundred eleven billion, seventy-five million, eight hundred ninety-three thousand, twenty".

Divisors: 1 2 4 5 10 20 73 79 146 158 292 316 365 395 730 790 1460 1580 5767 11534 23068 28835 57670 115340 11367053 22734106 45468212 56835265 113670530 227341060 829794869 897997187 1659589738 1795994374 3319179476 3591988748 4148974345 4489985935 8297948690 8979971870 16595897380 17959943740 65553794651 131107589302 262215178604 327768973255 655537946510 1311075893020