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23103431 = 132377269
BaseRepresentation
bin101100000100…
…0011111000111
31121110202221122
41120020133013
521403302211
62143104155
7400242641
oct130103707
947422848
1023103431
111204aa4a
1278a205b
134a2bb90
1430d5891
1520656db
hex16087c7

23103431 has 8 divisors (see below), whose sum is σ = 25962720. Its totient is φ = 20398752.

The previous prime is 23103419. The next prime is 23103433. The reversal of 23103431 is 13430132.

It is a happy number.

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 23103431 - 210 = 23102407 is a prime.

It is a super-2 number, since 2×231034312 = 1067537047943522, 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 (23103433) 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, 38336 + ... + 38933.

It is an arithmetic number, because the mean of its divisors is an integer number (3245340).

Almost surely, 223103431 is an apocalyptic number.

23103431 is a deficient number, since it is larger than the sum of its proper divisors (2859289).

23103431 is a wasteful number, since it uses less digits than its factorization.

23103431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77305.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 23103431 is about 4806.6028544077. The cubic root of 23103431 is about 284.8123562199.

Adding to 23103431 its reverse (13430132), we get a palindrome (36533563).

The spelling of 23103431 in words is "twenty-three million, one hundred three thousand, four hundred thirty-one".

Divisors: 1 13 23 299 77269 1004497 1777187 23103431