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23231493 = 323183267
BaseRepresentation
bin101100010011…
…1110000000101
31121201021121200
41120213300011
521421401433
62145533113
7401315205
oct130476005
947637550
1023231493
111212818a
127944199
134a7525c
14312a405
15208d613
hex1627c05

23231493 has 12 divisors (see below), whose sum is σ = 34639488. Its totient is φ = 14987880.

The previous prime is 23231491. The next prime is 23231539. The reversal of 23231493 is 39413232.

It is a happy number.

It is not a de Polignac number, because 23231493 - 21 = 23231491 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23231491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 41355 + ... + 41912.

It is an arithmetic number, because the mean of its divisors is an integer number (2886624).

Almost surely, 223231493 is an apocalyptic number.

It is an amenable number.

23231493 is a deficient number, since it is larger than the sum of its proper divisors (11407995).

23231493 is a wasteful number, since it uses less digits than its factorization.

23231493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83304 (or 83301 counting only the distinct ones).

The product of its digits is 3888, while the sum is 27.

The square root of 23231493 is about 4819.9059119448. The cubic root of 23231493 is about 285.3376238849.

The spelling of 23231493 in words is "twenty-three million, two hundred thirty-one thousand, four hundred ninety-three".

Divisors: 1 3 9 31 93 279 83267 249801 749403 2581277 7743831 23231493