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20113430441 = 139715950381
BaseRepresentation
bin10010101110110110…
…101001011110101001
31220220201222010120012
4102232312221132221
5312143014233231
613123500341305
71311300223616
oct225666513651
956821863505
1020113430441
118591563a95
123a93b44835
131b87041540
14d8b3b150d
157cabc4e2b
hex4aeda97a9

20113430441 has 8 divisors (see below), whose sum is σ = 21883924104. Its totient is φ = 18374837760.

The previous prime is 20113430437. The next prime is 20113430453. The reversal of 20113430441 is 14403431102.

It can be written as a sum of positive squares in 4 ways, for example, as 707826025 + 19405604416 = 26605^2 + 139304^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20113430441 - 22 = 20113430437 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20113430431) 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, 7973930 + ... + 7976451.

It is an arithmetic number, because the mean of its divisors is an integer number (2735490513).

Almost surely, 220113430441 is an apocalyptic number.

It is an amenable number.

20113430441 is a deficient number, since it is larger than the sum of its proper divisors (1770493663).

20113430441 is a wasteful number, since it uses less digits than its factorization.

20113430441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15950491.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 20113430441 its reverse (14403431102), we get a palindrome (34516861543).

The spelling of 20113430441 in words is "twenty billion, one hundred thirteen million, four hundred thirty thousand, four hundred forty-one".

Divisors: 1 13 97 1261 15950381 207354953 1547186957 20113430441