1351314421 has 4 divisors (see below), whose sum is σ = 1397911500. Its totient is φ = 1304717344.

The previous prime is 1351314403. The next prime is 1351314443. The reversal of 1351314421 is 1244131531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1244131531 = 12653 ⋅98327.

It can be written as a sum of positive squares in 2 ways, for example, as 221682321 + 1129632100 = 14889^2 + 33610^2 .

It is a cyclic number.

It is not a de Polignac number, because 1351314421 - 2¹⁷ = 1351183349 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 (1351314721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23298496 + ... + 23298553.

It is an arithmetic number, because the mean of its divisors is an integer number (349477875).

Almost surely, 2^1351314421 is an apocalyptic number.

It is an amenable number.

1351314421 is a deficient number, since it is larger than the sum of its proper divisors (46597079).

1351314421 is an equidigital number, since it uses as much as digits as its factorization.

1351314421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46597078.

The product of its digits is 1440, while the sum is 25.

The square root of 1351314421 is about 36760.2287941737. The cubic root of 1351314421 is about 1105.5680271946.

Adding to 1351314421 its reverse (1244131531), we get a palindrome (2595445952).

The spelling of 1351314421 in words is "one billion, three hundred fifty-one million, three hundred fourteen thousand, four hundred twenty-one".