23162861 has 2 divisors, whose sum is σ = 23162862. Its totient is φ = 23162860.

The previous prime is 23162849. The next prime is 23162899. The reversal of 23162861 is 16826132.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13645636 + 9517225 = 3694^2 + 3085^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23162861 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23162831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11581430 + 11581431.

It is an arithmetic number, because the mean of its divisors is an integer number (11581431).

Almost surely, 2^23162861 is an apocalyptic number.

It is an amenable number.

23162861 is a deficient number, since it is larger than the sum of its proper divisors (1).

23162861 is an equidigital number, since it uses as much as digits as its factorization.

23162861 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3456, while the sum is 29.

The square root of 23162861 is about 4812.7810047830. The cubic root of 23162861 is about 285.0563590194.

Adding to 23162861 its reverse (16826132), we get a palindrome (39988993).

The spelling of 23162861 in words is "twenty-three million, one hundred sixty-two thousand, eight hundred sixty-one".