310242421 has 2 divisors, whose sum is σ = 310242422. Its totient is φ = 310242420.

The previous prime is 310242379. The next prime is 310242467. The reversal of 310242421 is 124242013.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 310112100 + 130321 = 17610^2 + 361^2 .

It is a cyclic number.

It is not a de Polignac number, because 310242421 - 2¹⁹ = 309718133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (310242221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155121210 + 155121211.

It is an arithmetic number, because the mean of its divisors is an integer number (155121211).

Almost surely, 2^310242421 is an apocalyptic number.

It is an amenable number.

310242421 is a deficient number, since it is larger than the sum of its proper divisors (1).

310242421 is an equidigital number, since it uses as much as digits as its factorization.

310242421 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.

The square root of 310242421 is about 17613.6998100910. The cubic root of 310242421 is about 676.9663165512.

Adding to 310242421 its reverse (124242013), we get a palindrome (434484434).

The spelling of 310242421 in words is "three hundred ten million, two hundred forty-two thousand, four hundred twenty-one".