23487161 has 4 divisors (see below), whose sum is σ = 23522532. Its totient is φ = 23451792.

The previous prime is 23487157. The next prime is 23487203. The reversal of 23487161 is 16178432.

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

It can be written as a sum of positive squares in 2 ways, for example, as 20647936 + 2839225 = 4544^2 + 1685^2 .

It is a cyclic number.

It is not a de Polignac number, because 23487161 - 2² = 23487157 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23487131) 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 3 ways as a sum of consecutive naturals, for example, 16670 + ... + 18023.

It is an arithmetic number, because the mean of its divisors is an integer number (5880633).

Almost surely, 2^23487161 is an apocalyptic number.

It is an amenable number.

23487161 is a deficient number, since it is larger than the sum of its proper divisors (35371).

23487161 is an equidigital number, since it uses as much as digits as its factorization.

23487161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35370.

The product of its digits is 8064, while the sum is 32.

The square root of 23487161 is about 4846.3554347571. The cubic root of 23487161 is about 286.3805430393.

The spelling of 23487161 in words is "twenty-three million, four hundred eighty-seven thousand, one hundred sixty-one".