30401320421 has 2 divisors, whose sum is σ = 30401320422. Its totient is φ = 30401320420.

The previous prime is 30401320399. The next prime is 30401320429. The reversal of 30401320421 is 12402310403.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15348484321 + 15052836100 = 123889^2 + 122690^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30401320421 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 30401320393 and 30401320402.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30401320429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15200660210 + 15200660211.

It is an arithmetic number, because the mean of its divisors is an integer number (15200660211).

Almost surely, 2^30401320421 is an apocalyptic number.

It is an amenable number.

30401320421 is a deficient number, since it is larger than the sum of its proper divisors (1).

30401320421 is an equidigital number, since it uses as much as digits as its factorization.

30401320421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 30401320421 its reverse (12402310403), we get a palindrome (42803630824).

The spelling of 30401320421 in words is "thirty billion, four hundred one million, three hundred twenty thousand, four hundred twenty-one".