23171001 has 16 divisors (see below), whose sum is σ = 35497344. Its totient is φ = 13169664.

The previous prime is 23170999. The next prime is 23171009. The reversal of 23171001 is 10017132.

It is not a de Polignac number, because 23171001 - 2¹ = 23170999 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23171009) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1195 + ... + 6911.

It is an arithmetic number, because the mean of its divisors is an integer number (2218584).

Almost surely, 2^23171001 is an apocalyptic number.

23171001 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

23171001 is a deficient number, since it is larger than the sum of its proper divisors (12326343).

23171001 is a wasteful number, since it uses less digits than its factorization.

23171001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5920.

The product of its (nonzero) digits is 42, while the sum is 15.

The square root of 23171001 is about 4813.6265954060. The cubic root of 23171001 is about 285.0897470510.

Adding to 23171001 its reverse (10017132), we get a palindrome (33188133).

The spelling of 23171001 in words is "twenty-three million, one hundred seventy-one thousand, one".