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20230223231 = 8913711531439
BaseRepresentation
bin10010110101110100…
…001011010101111111
31221012212201211011002
4102311310023111333
5312412414120411
613143231520515
71314216026441
oct226564132577
957185654132
1020230223231
118641485159
123b0708913b
131ba52b46ba
14d9cad4491
157d609533b
hex4b5d0b57f

20230223231 has 16 divisors (see below), whose sum is σ = 20639059200. Its totient is φ = 19825901568.

The previous prime is 20230223219. The next prime is 20230223297. The reversal of 20230223231 is 13232203202.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-20230223231 is a prime.

It is a super-2 number, since 2×202302232312 (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 (20230223131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14057810 + ... + 14059248.

It is an arithmetic number, because the mean of its divisors is an integer number (1289941200).

Almost surely, 220230223231 is an apocalyptic number.

20230223231 is a deficient number, since it is larger than the sum of its proper divisors (408835969).

20230223231 is a wasteful number, since it uses less digits than its factorization.

20230223231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2818.

The product of its (nonzero) digits is 864, while the sum is 20.

Adding to 20230223231 its reverse (13232203202), we get a palindrome (33462426433).

The spelling of 20230223231 in words is "twenty billion, two hundred thirty million, two hundred twenty-three thousand, two hundred thirty-one".

Divisors: 1 89 137 1153 1439 12193 102617 128071 157961 197143 1659167 14058529 17545727 147665863 227305879 20230223231