310400400421 has 2 divisors, whose sum is σ = 310400400422. Its totient is φ = 310400400420.

The previous prime is 310400400413. The next prime is 310400400467. The reversal of 310400400421 is 124004004013.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 217259464321 + 93140936100 = 466111^2 + 305190^2 .

It is a cyclic number.

It is not a de Polignac number, because 310400400421 - 2³ = 310400400413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (310400400491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155200200210 + 155200200211.

It is an arithmetic number, because the mean of its divisors is an integer number (155200200211).

Almost surely, 2^310400400421 is an apocalyptic number.

It is an amenable number.

310400400421 is a deficient number, since it is larger than the sum of its proper divisors (1).

310400400421 is an equidigital number, since it uses as much as digits as its factorization.

310400400421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 310400400421 its reverse (124004004013), we get a palindrome (434404404434).

The spelling of 310400400421 in words is "three hundred ten billion, four hundred million, four hundred thousand, four hundred twenty-one".