431771520253 has 2 divisors, whose sum is σ = 431771520254. Its totient is φ = 431771520252.

The previous prime is 431771520251. The next prime is 431771520263. The reversal of 431771520253 is 352025177134.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 218352467524 + 213419052729 = 467282^2 + 461973^2 .

It is a cyclic number.

It is not a de Polignac number, because 431771520253 - 2¹ = 431771520251 is a prime.

Together with 431771520251, 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 (431771520251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 215885760126 + 215885760127.

It is an arithmetic number, because the mean of its divisors is an integer number (215885760127).

Almost surely, 2^431771520253 is an apocalyptic number.

It is an amenable number.

431771520253 is a deficient number, since it is larger than the sum of its proper divisors (1).

431771520253 is an equidigital number, since it uses as much as digits as its factorization.

431771520253 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 176400, while the sum is 40.

Adding to 431771520253 its reverse (352025177134), we get a palindrome (783796697387).

The spelling of 431771520253 in words is "four hundred thirty-one billion, seven hundred seventy-one million, five hundred twenty thousand, two hundred fifty-three".