23064781 has 2 divisors, whose sum is σ = 23064782. Its totient is φ = 23064780.

The previous prime is 23064779. The next prime is 23064799. The reversal of 23064781 is 18746032.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11902500 + 11162281 = 3450^2 + 3341^2 .

It is a cyclic number.

It is not a de Polignac number, because 23064781 - 2¹ = 23064779 is a prime.

It is a super-2 number, since 2×23064781² = 1063968245155922, which contains 22 as substring.

Together with 23064779, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23064721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11532390 + 11532391.

It is an arithmetic number, because the mean of its divisors is an integer number (11532391).

Almost surely, 2^23064781 is an apocalyptic number.

It is an amenable number.

23064781 is a deficient number, since it is larger than the sum of its proper divisors (1).

23064781 is an equidigital number, since it uses as much as digits as its factorization.

23064781 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 23064781 is about 4802.5806604366. The cubic root of 23064781 is about 284.6534455983.

The spelling of 23064781 in words is "twenty-three million, sixty-four thousand, seven hundred eighty-one".