1356421013 has 2 divisors, whose sum is σ = 1356421014. Its totient is φ = 1356421012.

The previous prime is 1356420959. The next prime is 1356421037. The reversal of 1356421013 is 3101246531.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1353724849 + 2696164 = 36793^2 + 1642^2 .

It is a cyclic number.

It is not a de Polignac number, because 1356421013 - 2¹⁰ = 1356419989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1356421043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 678210506 + 678210507.

It is an arithmetic number, because the mean of its divisors is an integer number (678210507).

Almost surely, 2^1356421013 is an apocalyptic number.

It is an amenable number.

1356421013 is a deficient number, since it is larger than the sum of its proper divisors (1).

1356421013 is an equidigital number, since it uses as much as digits as its factorization.

1356421013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 1356421013 is about 36829.6214072314. The cubic root of 1356421013 is about 1106.9589169343.

Adding to 1356421013 its reverse (3101246531), we get a palindrome (4457667544).

The spelling of 1356421013 in words is "one billion, three hundred fifty-six million, four hundred twenty-one thousand, thirteen".