23220430357 has 2 divisors, whose sum is σ = 23220430358. Its totient is φ = 23220430356.

The previous prime is 23220430307. The next prime is 23220430369. The reversal of 23220430357 is 75303402232.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23199554596 + 20875761 = 152314^2 + 4569^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23220430357 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23220430307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11610215178 + 11610215179.

It is an arithmetic number, because the mean of its divisors is an integer number (11610215179).

Almost surely, 2^23220430357 is an apocalyptic number.

It is an amenable number.

23220430357 is a deficient number, since it is larger than the sum of its proper divisors (1).

23220430357 is an equidigital number, since it uses as much as digits as its factorization.

23220430357 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30240, while the sum is 31.

Adding to 23220430357 its reverse (75303402232), we get a palindrome (98523832589).

The spelling of 23220430357 in words is "twenty-three billion, two hundred twenty million, four hundred thirty thousand, three hundred fifty-seven".