23121073 has 2 divisors, whose sum is σ = 23121074. Its totient is φ = 23121072.

The previous prime is 23121053. The next prime is 23121101. The reversal of 23121073 is 37012132.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19998784 + 3122289 = 4472^2 + 1767^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23121073 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23121073.

It is not a weakly prime, because it can be changed into another prime (23121053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11560536 + 11560537.

It is an arithmetic number, because the mean of its divisors is an integer number (11560537).

Almost surely, 2^23121073 is an apocalyptic number.

It is an amenable number.

23121073 is a deficient number, since it is larger than the sum of its proper divisors (1).

23121073 is an equidigital number, since it uses as much as digits as its factorization.

23121073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 252, while the sum is 19.

The square root of 23121073 is about 4808.4376880646. The cubic root of 23121073 is about 284.8848329179.

The spelling of 23121073 in words is "twenty-three million, one hundred twenty-one thousand, seventy-three".