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20310140401 = 29700349669
BaseRepresentation
bin10010111010100101…
…000010010111110001
31221102110010000220021
4102322211002113301
5313043343443101
613155204443441
71316206226215
oct227245022761
957373100807
1020310140401
1186825aa101
123b299a9581
131bb8a16175
14da9578945
157dd0ce5a1
hex4ba9425f1

20310140401 has 4 divisors (see below), whose sum is σ = 21010490100. Its totient is φ = 19609790704.

The previous prime is 20310140351. The next prime is 20310140437. The reversal of 20310140401 is 10404101302.

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

It can be written as a sum of positive squares in 2 ways, for example, as 17329089600 + 2981050801 = 131640^2 + 54599^2 .

It is a cyclic number.

It is not a de Polignac number, because 20310140401 - 27 = 20310140273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20310144401) 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, 350174806 + ... + 350174863.

It is an arithmetic number, because the mean of its divisors is an integer number (5252622525).

Almost surely, 220310140401 is an apocalyptic number.

It is an amenable number.

20310140401 is a deficient number, since it is larger than the sum of its proper divisors (700349699).

20310140401 is an equidigital number, since it uses as much as digits as its factorization.

20310140401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 700349698.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 20310140401 its reverse (10404101302), we get a palindrome (30714241703).

The spelling of 20310140401 in words is "twenty billion, three hundred ten million, one hundred forty thousand, four hundred one".

Divisors: 1 29 700349669 20310140401