23074921 has 2 divisors, whose sum is σ = 23074922. Its totient is φ = 23074920.

The previous prime is 23074907. The next prime is 23074991. The reversal of 23074921 is 12947032.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17338896 + 5736025 = 4164^2 + 2395^2 .

It is a cyclic number.

It is not a de Polignac number, because 23074921 - 2⁵ = 23074889 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a self number, because there is not a number n which added to its sum of digits gives 23074921.

It is not a weakly prime, because it can be changed into another prime (23074991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11537460 + 11537461.

It is an arithmetic number, because the mean of its divisors is an integer number (11537461).

Almost surely, 2^23074921 is an apocalyptic number.

It is an amenable number.

23074921 is a deficient number, since it is larger than the sum of its proper divisors (1).

23074921 is an equidigital number, since it uses as much as digits as its factorization.

23074921 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 23074921 is about 4803.6362268598. The cubic root of 23074921 is about 284.6951536763.

The spelling of 23074921 in words is "twenty-three million, seventy-four thousand, nine hundred twenty-one".