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20402132203 = 31365182531
BaseRepresentation
bin10011000000000011…
…111101010011101011
31221122212012200221001
4103000003331103223
5313240421212303
613212252255431
71321404155665
oct230003752353
957585180831
1020402132203
11871a520992
123b54771577
131c01ab489b
14db7883535
157e620131d
hex4c00fd4eb

20402132203 has 4 divisors (see below), whose sum is σ = 20467315048. Its totient is φ = 20336949360.

The previous prime is 20402132183. The next prime is 20402132251. The reversal of 20402132203 is 30223120402.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-20402132203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20402139203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32590953 + ... + 32591578.

It is an arithmetic number, because the mean of its divisors is an integer number (5116828762).

Almost surely, 220402132203 is an apocalyptic number.

20402132203 is a deficient number, since it is larger than the sum of its proper divisors (65182845).

20402132203 is an equidigital number, since it uses as much as digits as its factorization.

20402132203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65182844.

The product of its (nonzero) digits is 576, while the sum is 19.

Adding to 20402132203 its reverse (30223120402), we get a palindrome (50625252605).

The spelling of 20402132203 in words is "twenty billion, four hundred two million, one hundred thirty-two thousand, two hundred three".

Divisors: 1 313 65182531 20402132203