20003301231257 has 2 divisors, whose sum is σ = 20003301231258. Its totient is φ = 20003301231256.

The previous prime is 20003301231247. The next prime is 20003301231337. The reversal of 20003301231257 is 75213210330002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20002325980816 + 975250441 = 4472396^2 + 31229^2 .

It is a cyclic number.

It is not a de Polignac number, because 20003301231257 - 2⁴ = 20003301231241 is a prime.

It is not a weakly prime, because it can be changed into another prime (20003301231247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10001650615628 + 10001650615629.

It is an arithmetic number, because the mean of its divisors is an integer number (10001650615629).

Almost surely, 2^{20003301231257} is an apocalyptic number.

It is an amenable number.

20003301231257 is a deficient number, since it is larger than the sum of its proper divisors (1).

20003301231257 is an equidigital number, since it uses as much as digits as its factorization.

20003301231257 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7560, while the sum is 29.

Adding to 20003301231257 its reverse (75213210330002), we get a palindrome (95216511561259).

The spelling of 20003301231257 in words is "twenty trillion, three billion, three hundred one million, two hundred thirty-one thousand, two hundred fifty-seven".