1314335021 has 4 divisors (see below), whose sum is σ = 1314490044. Its totient is φ = 1314180000.

The previous prime is 1314334999. The next prime is 1314335027. The reversal of 1314335021 is 1205334131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1205334131 = 12479 ⋅96589.

It can be written as a sum of positive squares in 2 ways, for example, as 107536900 + 1206798121 = 10370^2 + 34739^2 .

It is a cyclic number.

It is not a de Polignac number, because 1314335021 - 2¹⁰ = 1314333997 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1314335027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64010 + ... + 82011.

It is an arithmetic number, because the mean of its divisors is an integer number (328622511).

Almost surely, 2^1314335021 is an apocalyptic number.

It is an amenable number.

1314335021 is a deficient number, since it is larger than the sum of its proper divisors (155023).

1314335021 is an equidigital number, since it uses as much as digits as its factorization.

1314335021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155022.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 1314335021 is about 36253.7587154767. The cubic root of 1314335021 is about 1095.3898019362.

Adding to 1314335021 its reverse (1205334131), we get a palindrome (2519669152).

The spelling of 1314335021 in words is "one billion, three hundred fourteen million, three hundred thirty-five thousand, twenty-one".