23463821 has 2 divisors, whose sum is σ = 23463822. Its totient is φ = 23463820.

The previous prime is 23463787. The next prime is 23463823. The reversal of 23463821 is 12836432.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14523721 + 8940100 = 3811^2 + 2990^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23463821 is a prime.

Together with 23463823, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23463823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11731910 + 11731911.

It is an arithmetic number, because the mean of its divisors is an integer number (11731911).

Almost surely, 2^23463821 is an apocalyptic number.

It is an amenable number.

23463821 is a deficient number, since it is larger than the sum of its proper divisors (1).

23463821 is an equidigital number, since it uses as much as digits as its factorization.

23463821 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6912, while the sum is 29.

The square root of 23463821 is about 4843.9468411617. The cubic root of 23463821 is about 286.2856495331.

The spelling of 23463821 in words is "twenty-three million, four hundred sixty-three thousand, eight hundred twenty-one".