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2031123233140 = 225101556161657
BaseRepresentation
bin11101100011101000011…
…000001111100101110100
321012011200110200220112121
4131203220120033211310
5231234220021430030
64153030215525324
7266513061423061
oct35435030174564
97164613626477
102031123233140
11713438128571
1228978b089844
131196c3553061
1470442163c68
1537c7a52b47a
hex1d8e860f974

2031123233140 has 12 divisors (see below), whose sum is σ = 4265358789636. Its totient is φ = 812449293248.

The previous prime is 2031123233137. The next prime is 2031123233197. The reversal of 2031123233140 is 413323211302.

It can be written as a sum of positive squares in 2 ways, for example, as 641091665124 + 1390031568016 = 800682^2 + 1178996^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50778080809 + ... + 50778080848.

It is an arithmetic number, because the mean of its divisors is an integer number (355446565803).

Almost surely, 22031123233140 is an apocalyptic number.

2031123233140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2031123233140 is an abundant number, since it is smaller than the sum of its proper divisors (2234235556496).

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

2031123233140 is a wasteful number, since it uses less digits than its factorization.

2031123233140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101556161666 (or 101556161664 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 2031123233140 its reverse (413323211302), we get a palindrome (2444446444442).

The spelling of 2031123233140 in words is "two trillion, thirty-one billion, one hundred twenty-three million, two hundred thirty-three thousand, one hundred forty".

Divisors: 1 2 4 5 10 20 101556161657 203112323314 406224646628 507780808285 1015561616570 2031123233140