23161401 has 12 divisors (see below), whose sum is σ = 34609380. Its totient is φ = 14908320.

The previous prime is 23161393. The next prime is 23161403. The reversal of 23161401 is 10416132.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 8415801 + 14745600 = 2901^2 + 3840^2 .

It is not a de Polignac number, because 23161401 - 2³ = 23161393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23161403) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 44110 + ... + 44631.

It is an arithmetic number, because the mean of its divisors is an integer number (2884115).

Almost surely, 2^23161401 is an apocalyptic number.

It is an amenable number.

23161401 is a deficient number, since it is larger than the sum of its proper divisors (11447979).

23161401 is a wasteful number, since it uses less digits than its factorization.

23161401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88776 (or 88773 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 23161401 is about 4812.6293229377. The cubic root of 23161401 is about 285.0503696754.

Adding to 23161401 its reverse (10416132), we get a palindrome (33577533).

The spelling of 23161401 in words is "twenty-three million, one hundred sixty-one thousand, four hundred one".