1310212421 has 6 divisors (see below), whose sum is σ = 1524124710. Its totient is φ = 1123039176.

The previous prime is 1310212349. The next prime is 1310212433. The reversal of 1310212421 is 1242120131.

It can be written as a sum of positive squares in only one way, i.e., 1163560321 + 146652100 = 34111^2 + 12110^2 .

It is not a de Polignac number, because 1310212421 - 2¹⁴ = 1310196037 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1310212421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1310212481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13369466 + ... + 13369563.

It is an arithmetic number, because the mean of its divisors is an integer number (254020785).

Almost surely, 2^1310212421 is an apocalyptic number.

It is an amenable number.

1310212421 is a deficient number, since it is larger than the sum of its proper divisors (213912289).

1310212421 is an equidigital number, since it uses as much as digits as its factorization.

1310212421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26739043 (or 26739036 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 1310212421 is about 36196.8565071609. The cubic root of 1310212421 is about 1094.2433200750.

Adding to 1310212421 its reverse (1242120131), we get a palindrome (2552332552).

The spelling of 1310212421 in words is "one billion, three hundred ten million, two hundred twelve thousand, four hundred twenty-one".