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20214424231 = 311493436757
BaseRepresentation
bin10010110100110111…
…111010001010100111
31221011210000010222221
4102310313322022213
5312344343033411
613141505133211
71313634525301
oct226467721247
957153003887
1020214424231
118633574131
123b0192a207
131ba1c42491
14d9a980971
157d49c4071
hex4b4dfa2a7

20214424231 has 8 divisors (see below), whose sum is σ = 20880526464. Its totient is φ = 19549198560.

The previous prime is 20214424201. The next prime is 20214424283. The reversal of 20214424231 is 13242441202.

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 20214424231 - 25 = 20214424199 is a prime.

It is a super-2 number, since 2×202144242312 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20214424196 and 20214424205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20214424201) 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, 172096 + ... + 264661.

It is an arithmetic number, because the mean of its divisors is an integer number (2610065808).

Almost surely, 220214424231 is an apocalyptic number.

20214424231 is a deficient number, since it is larger than the sum of its proper divisors (666102233).

20214424231 is a wasteful number, since it uses less digits than its factorization.

20214424231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 438281.

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 20214424231 its reverse (13242441202), we get a palindrome (33456865433).

The spelling of 20214424231 in words is "twenty billion, two hundred fourteen million, four hundred twenty-four thousand, two hundred thirty-one".

Divisors: 1 31 1493 46283 436757 13539467 652078201 20214424231