23490681523 has 2 divisors, whose sum is σ = 23490681524. Its totient is φ = 23490681522.

The previous prime is 23490681509. The next prime is 23490681527. The reversal of 23490681523 is 32518609432.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23490681523 - 2²⁹ = 22953810611 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23490681523.

It is not a weakly prime, because it can be changed into another prime (23490681527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11745340761 + 11745340762.

It is an arithmetic number, because the mean of its divisors is an integer number (11745340762).

Almost surely, 2^23490681523 is an apocalyptic number.

23490681523 is a deficient number, since it is larger than the sum of its proper divisors (1).

23490681523 is an equidigital number, since it uses as much as digits as its factorization.

23490681523 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 311040, while the sum is 43.

The spelling of 23490681523 in words is "twenty-three billion, four hundred ninety million, six hundred eighty-one thousand, five hundred twenty-three".