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20533254031 = 711453199037
BaseRepresentation
bin10011000111111000…
…001001011110001111
31221222222221101021001
4103013320021132033
5314023003112111
613233254521131
71324555531243
oct230770113617
957888841231
1020533254031
118787539734
123b906661a7
131c23003b74
14dcb056423
158029a21c1
hex4c7e0978f

20533254031 has 8 divisors (see below), whose sum is σ = 20836890144. Its totient is φ = 20230019040.

The previous prime is 20533253987. The next prime is 20533254089. The reversal of 20533254031 is 13045233502.

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 20533254031 - 217 = 20533122959 is a prime.

It is a super-2 number, since 2×205332540312 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20533254431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3645 + ... + 202681.

It is an arithmetic number, because the mean of its divisors is an integer number (2604611268).

Almost surely, 220533254031 is an apocalyptic number.

20533254031 is a deficient number, since it is larger than the sum of its proper divisors (303636113).

20533254031 is a wasteful number, since it uses less digits than its factorization.

20533254031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200561.

The product of its (nonzero) digits is 10800, while the sum is 28.

Adding to 20533254031 its reverse (13045233502), we get a palindrome (33578487533).

The spelling of 20533254031 in words is "twenty billion, five hundred thirty-three million, two hundred fifty-four thousand, thirty-one".

Divisors: 1 71 1453 103163 199037 14131627 289200761 20533254031