1310322421 has 2 divisors, whose sum is σ = 1310322422. Its totient is φ = 1310322420.

The previous prime is 1310322407. The next prime is 1310322439. The reversal of 1310322421 is 1242230131.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1231308100 + 79014321 = 35090^2 + 8889^2 .

It is a cyclic number.

It is not a de Polignac number, because 1310322421 - 2¹⁵ = 1310289653 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1310322401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 655161210 + 655161211.

It is an arithmetic number, because the mean of its divisors is an integer number (655161211).

Almost surely, 2^1310322421 is an apocalyptic number.

It is an amenable number.

1310322421 is a deficient number, since it is larger than the sum of its proper divisors (1).

1310322421 is an equidigital number, since it uses as much as digits as its factorization.

1310322421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 1310322421 is about 36198.3759442326. The cubic root of 1310322421 is about 1094.2739419281.

Adding to 1310322421 its reverse (1242230131), we get a palindrome (2552552552).

The spelling of 1310322421 in words is "one billion, three hundred ten million, three hundred twenty-two thousand, four hundred twenty-one".