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23152531423 = 723143804543
BaseRepresentation
bin10101100011111111…
…111001011111011111
32012202112120110100211
4111203333321133133
5334404022001143
614345223033251
71446512161420
oct254377713737
965675513324
1023152531423
11990100059a
1245a189b827
13224c866348
141198c75647
159078de49d
hex563ff97df

23152531423 has 8 divisors (see below), whose sum is σ = 27610472448. Its totient is φ = 18982199544.

The previous prime is 23152531417. The next prime is 23152531439. The reversal of 23152531423 is 32413525132.

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

It is not a de Polignac number, because 23152531423 - 213 = 23152523231 is a prime.

It is a super-2 number, since 2×231525314232 (a number of 22 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 (23152531463) 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, 71902111 + ... + 71902432.

It is an arithmetic number, because the mean of its divisors is an integer number (3451309056).

Almost surely, 223152531423 is an apocalyptic number.

23152531423 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

23152531423 is a deficient number, since it is larger than the sum of its proper divisors (4457941025).

23152531423 is a wasteful number, since it uses less digits than its factorization.

23152531423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143804573.

The product of its digits is 21600, while the sum is 31.

The spelling of 23152531423 in words is "twenty-three billion, one hundred fifty-two million, five hundred thirty-one thousand, four hundred twenty-three".

Divisors: 1 7 23 161 143804543 1006631801 3307504489 23152531423