421313134003403 has 2 divisors, whose sum is σ = 421313134003404. Its totient is φ = 421313134003402.

The previous prime is 421313134003369. The next prime is 421313134003439. The reversal of 421313134003403 is 304300431313124.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 421313134003403 - 2⁶ = 421313134003339 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 421313134003403.

It is not a weakly prime, because it can be changed into another prime (421313134003603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210656567001701 + 210656567001702.

It is an arithmetic number, because the mean of its divisors is an integer number (210656567001702).

Almost surely, 2^{421313134003403} is an apocalyptic number.

421313134003403 is a deficient number, since it is larger than the sum of its proper divisors (1).

421313134003403 is an equidigital number, since it uses as much as digits as its factorization.

421313134003403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31104, while the sum is 32.

Adding to 421313134003403 its reverse (304300431313124), we get a palindrome (725613565316527).

The spelling of 421313134003403 in words is "four hundred twenty-one trillion, three hundred thirteen billion, one hundred thirty-four million, three thousand, four hundred three".