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23054431 = 171356143
BaseRepresentation
bin101011111110…
…0100001011111
31121101021201211
41113330201133
521400220211
62142045251
7366650041
oct127744137
947337654
1023054431
1112017154
127879827
134a1279a
1430c1a91
152055e21
hex15fc85f

23054431 has 4 divisors (see below), whose sum is σ = 24410592. Its totient is φ = 21698272.

The previous prime is 23054419. The next prime is 23054461. The reversal of 23054431 is 13445032.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 23054431 - 25 = 23054399 is a prime.

It is a super-2 number, since 2×230544312 = 1063013577467522, 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 (23054411) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 678055 + ... + 678088.

It is an arithmetic number, because the mean of its divisors is an integer number (6102648).

Almost surely, 223054431 is an apocalyptic number.

23054431 is a deficient number, since it is larger than the sum of its proper divisors (1356161).

23054431 is a wasteful number, since it uses less digits than its factorization.

23054431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1356160.

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 23054431 is about 4801.5029938552. The cubic root of 23054431 is about 284.6108611351.

Adding to 23054431 its reverse (13445032), we get a palindrome (36499463).

The spelling of 23054431 in words is "twenty-three million, fifty-four thousand, four hundred thirty-one".

Divisors: 1 17 1356143 23054431