23286421 has 2 divisors, whose sum is σ = 23286422. Its totient is φ = 23286420.

The previous prime is 23286409. The next prime is 23286427. The reversal of 23286421 is 12468232.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18922500 + 4363921 = 4350^2 + 2089^2 .

It is a cyclic number.

It is not a de Polignac number, because 23286421 - 2⁷ = 23286293 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23286421.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23286427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11643210 + 11643211.

It is an arithmetic number, because the mean of its divisors is an integer number (11643211).

Almost surely, 2^23286421 is an apocalyptic number.

It is an amenable number.

23286421 is a deficient number, since it is larger than the sum of its proper divisors (1).

23286421 is an equidigital number, since it uses as much as digits as its factorization.

23286421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4608, while the sum is 28.

The square root of 23286421 is about 4825.6005843833. The cubic root of 23286421 is about 285.5623287556.

The spelling of 23286421 in words is "twenty-three million, two hundred eighty-six thousand, four hundred twenty-one".