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23431001 = 114349537
BaseRepresentation
bin101100101100…
…0011101011001
31122002102021212
41121120131121
521444243001
62154112505
7403105646
oct131303531
948072255
1023431001
1112254070
127a1b735
134b14cc9
14317cdcd
1520cc7bb
hex1658759

23431001 has 8 divisors (see below), whose sum is σ = 26156064. Its totient is φ = 20805120.

The previous prime is 23430991. The next prime is 23431013. The reversal of 23431001 is 10013432.

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

It is not a de Polignac number, because 23431001 - 218 = 23168857 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23431021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24296 + ... + 25241.

It is an arithmetic number, because the mean of its divisors is an integer number (3269508).

Almost surely, 223431001 is an apocalyptic number.

It is an amenable number.

23431001 is a deficient number, since it is larger than the sum of its proper divisors (2725063).

23431001 is a wasteful number, since it uses less digits than its factorization.

23431001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49591.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 23431001 is about 4840.5579223887. The cubic root of 23431001 is about 286.1521066451.

Adding to 23431001 its reverse (10013432), we get a palindrome (33444433).

Subtracting from 23431001 its reverse (10013432), we obtain a square (13417569 = 36632).

The spelling of 23431001 in words is "twenty-three million, four hundred thirty-one thousand, one".

Divisors: 1 11 43 473 49537 544907 2130091 23431001