303020130421 has 2 divisors, whose sum is σ = 303020130422. Its totient is φ = 303020130420.

The previous prime is 303020130409. The next prime is 303020130467. The reversal of 303020130421 is 124031020303.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 174691397521 + 128328732900 = 417961^2 + 358230^2 .

It is a cyclic number.

It is not a de Polignac number, because 303020130421 - 2⁵ = 303020130389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (303020130221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 151510065210 + 151510065211.

It is an arithmetic number, because the mean of its divisors is an integer number (151510065211).

Almost surely, 2^303020130421 is an apocalyptic number.

It is an amenable number.

303020130421 is a deficient number, since it is larger than the sum of its proper divisors (1).

303020130421 is an equidigital number, since it uses as much as digits as its factorization.

303020130421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 303020130421 its reverse (124031020303), we get a palindrome (427051150724).

The spelling of 303020130421 in words is "three hundred three billion, twenty million, one hundred thirty thousand, four hundred twenty-one".