1247214013 has 2 divisors, whose sum is σ = 1247214014. Its totient is φ = 1247214012.

The previous prime is 1247213999. The next prime is 1247214029. The reversal of 1247214013 is 3104127421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1104698169 + 142515844 = 33237^2 + 11938^2 .

It is a cyclic number.

It is not a de Polignac number, because 1247214013 - 2¹³ = 1247205821 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1247214083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 623607006 + 623607007.

It is an arithmetic number, because the mean of its divisors is an integer number (623607007).

Almost surely, 2^1247214013 is an apocalyptic number.

It is an amenable number.

1247214013 is a deficient number, since it is larger than the sum of its proper divisors (1).

1247214013 is an equidigital number, since it uses as much as digits as its factorization.

1247214013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 1247214013 is about 35315.9172753590. The cubic root of 1247214013 is about 1076.4164527756.

The spelling of 1247214013 in words is "one billion, two hundred forty-seven million, two hundred fourteen thousand, thirteen".