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20031201132 = 2237921129959
BaseRepresentation
bin10010101001111100…
…111101111101101100
31220201000020110011020
4102221330331331230
5312010441414012
613111402054140
71306251254205
oct225174757554
956630213136
1020031201132
11854a0aa988
123a704aa350
131b72cb0547
14d804c85ac
157c3880a8c
hex4a9f3df6c

20031201132 has 24 divisors (see below), whose sum is σ = 47331110400. Its totient is φ = 6592546896.

The previous prime is 20031201107. The next prime is 20031201137. The reversal of 20031201132 is 23110213002.

It is not an unprimeable number, because it can be changed into a prime (20031201137) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10564032 + ... + 10565927.

It is an arithmetic number, because the mean of its divisors is an integer number (1972129600).

Almost surely, 220031201132 is an apocalyptic number.

It is an amenable number.

20031201132 is an abundant number, since it is smaller than the sum of its proper divisors (27299909268).

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

20031201132 is a wasteful number, since it uses less digits than its factorization.

20031201132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21130045 (or 21130043 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 20031201132 its reverse (23110213002), we get a palindrome (43141414134).

The spelling of 20031201132 in words is "twenty billion, thirty-one million, two hundred one thousand, one hundred thirty-two".

Divisors: 1 2 3 4 6 12 79 158 237 316 474 948 21129959 42259918 63389877 84519836 126779754 253559508 1669266761 3338533522 5007800283 6677067044 10015600566 20031201132