1310340421 has 8 divisors (see below), whose sum is σ = 1414924280. Its totient is φ = 1206297792.

The previous prime is 1310340391. The next prime is 1310340461. The reversal of 1310340421 is 1240430131.

It can be written as a sum of positive squares in 4 ways, for example, as 153388225 + 1156952196 = 12385^2 + 34014^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1310340421 - 2⁵ = 1310340389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1310340461) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 130266 + ... + 139963.

It is an arithmetic number, because the mean of its divisors is an integer number (176865535).

Almost surely, 2^1310340421 is an apocalyptic number.

It is an amenable number.

1310340421 is a deficient number, since it is larger than the sum of its proper divisors (104583859).

1310340421 is a wasteful number, since it uses less digits than its factorization.

1310340421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270615.

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

The square root of 1310340421 is about 36198.6245733177. The cubic root of 1310340421 is about 1094.2789526136.

Adding to 1310340421 its reverse (1240430131), we get a palindrome (2550770552).

The spelling of 1310340421 in words is "one billion, three hundred ten million, three hundred forty thousand, four hundred twenty-one".