23280077 has 2 divisors, whose sum is σ = 23280078. Its totient is φ = 23280076.

The previous prime is 23280053. The next prime is 23280079. The reversal of 23280077 is 77008232.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13756681 + 9523396 = 3709^2 + 3086^2 .

It is a cyclic number.

It is not a de Polignac number, because 23280077 - 2⁶ = 23280013 is a prime.

Together with 23280079, it forms a pair of twin primes.

It is a Chen prime.

It is a pancake number, because a pancake can be divided into 23280077 parts by 6823 straight cuts.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23280079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11640038 + 11640039.

It is an arithmetic number, because the mean of its divisors is an integer number (11640039).

Almost surely, 2^23280077 is an apocalyptic number.

It is an amenable number.

23280077 is a deficient number, since it is larger than the sum of its proper divisors (1).

23280077 is an equidigital number, since it uses as much as digits as its factorization.

23280077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4704, while the sum is 29.

The square root of 23280077 is about 4824.9432121011. The cubic root of 23280077 is about 285.5363941569.

The spelling of 23280077 in words is "twenty-three million, two hundred eighty thousand, seventy-seven".