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23081974237 = 735348719181
BaseRepresentation
bin10101011111110010…
…101111100111011101
32012120121210210002201
4111133302233213131
5334232441133422
614334222451501
71444664354350
oct253762574735
965517723081
1023081974237
119875199973
124582133b91
13223b06102a
14118d74a297
15901603727
hex55fcaf9dd

23081974237 has 16 divisors (see below), whose sum is σ = 26509830912. Its totient is φ = 19686965760.

The previous prime is 23081974199. The next prime is 23081974241. The reversal of 23081974237 is 73247918032.

It is not a de Polignac number, because 23081974237 - 27 = 23081974109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23081972237) 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, 1193787 + ... + 1212967.

It is an arithmetic number, because the mean of its divisors is an integer number (1656864432).

Almost surely, 223081974237 is an apocalyptic number.

It is an amenable number.

23081974237 is a deficient number, since it is larger than the sum of its proper divisors (3427856675).

23081974237 is a wasteful number, since it uses less digits than its factorization.

23081974237 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20028.

The product of its (nonzero) digits is 508032, while the sum is 46.

The spelling of 23081974237 in words is "twenty-three billion, eighty-one million, nine hundred seventy-four thousand, two hundred thirty-seven".

Divisors: 1 7 353 487 2471 3409 19181 134267 171911 1203377 6770893 9341147 47396251 65388029 3297424891 23081974237