23040020423389 has 2 divisors, whose sum is σ = 23040020423390. Its totient is φ = 23040020423388.

The previous prime is 23040020423383. The next prime is 23040020423437. The reversal of 23040020423389 is 98332402004032.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19921564636164 + 3118455787225 = 4463358^2 + 1765915^2 .

It is a cyclic number.

It is not a de Polignac number, because 23040020423389 - 2¹⁹ = 23040019899101 is a prime.

It is a super-2 number, since 2×23040020423389² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23040020423383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11520010211694 + 11520010211695.

It is an arithmetic number, because the mean of its divisors is an integer number (11520010211695).

Almost surely, 2^{23040020423389} is an apocalyptic number.

It is an amenable number.

23040020423389 is a deficient number, since it is larger than the sum of its proper divisors (1).

23040020423389 is an equidigital number, since it uses as much as digits as its factorization.

23040020423389 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 248832, while the sum is 40.

The spelling of 23040020423389 in words is "twenty-three trillion, forty billion, twenty million, four hundred twenty-three thousand, three hundred eighty-nine".