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23195381 = 114151431
BaseRepresentation
bin101100001111…
…0111011110101
31121122110002012
41120132323311
521414223011
62145054005
7401105006
oct130367365
947573065
1023195381
1112103040
127927305
134a619a1
14311b1ad
152082a8b
hex161eef5

23195381 has 8 divisors (see below), whose sum is σ = 25921728. Its totient is φ = 20572000.

The previous prime is 23195369. The next prime is 23195399. The reversal of 23195381 is 18359132.

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 23195381 - 26 = 23195317 is a prime.

It is a super-2 number, since 2×231953812 = 1076051399470322, which 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 (23195281) 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, 25265 + ... + 26166.

It is an arithmetic number, because the mean of its divisors is an integer number (3240216).

Almost surely, 223195381 is an apocalyptic number.

It is an amenable number.

23195381 is a deficient number, since it is larger than the sum of its proper divisors (2726347).

23195381 is a wasteful number, since it uses less digits than its factorization.

23195381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51483.

The product of its digits is 6480, while the sum is 32.

The square root of 23195381 is about 4816.1583238095. The cubic root of 23195381 is about 285.1897003179.

The spelling of 23195381 in words is "twenty-three million, one hundred ninety-five thousand, three hundred eighty-one".

Divisors: 1 11 41 451 51431 565741 2108671 23195381