1310343221 has 64 divisors (see below), whose sum is σ = 1646023680. Its totient is φ = 1028751360.

The previous prime is 1310343169. The next prime is 1310343239. The reversal of 1310343221 is 1223430131.

It is a cyclic number.

It is not a de Polignac number, because 1310343221 - 2¹⁴ = 1310326837 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1310343193 and 1310343202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1310343121) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 13508645 + ... + 13508741.

It is an arithmetic number, because the mean of its divisors is an integer number (25719120).

Almost surely, 2^1310343221 is an apocalyptic number.

1310343221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1310343221 is a deficient number, since it is larger than the sum of its proper divisors (335680459).

1310343221 is a wasteful number, since it uses less digits than its factorization.

1310343221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 1310343221 is about 36198.6632487997. The cubic root of 1310343221 is about 1094.2797320495.

Adding to 1310343221 its reverse (1223430131), we get a palindrome (2533773352).

The spelling of 1310343221 in words is "one billion, three hundred ten million, three hundred forty-three thousand, two hundred twenty-one".