1243013413 has 16 divisors (see below), whose sum is σ = 1295438080. Its totient is φ = 1192029696.

The previous prime is 1243013393. The next prime is 1243013419. The reversal of 1243013413 is 3143103421.

It is not a de Polignac number, because 1243013413 - 2⁵ = 1243013381 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 (1243013419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 384781 + ... + 387997.

It is an arithmetic number, because the mean of its divisors is an integer number (80964880).

Almost surely, 2^1243013413 is an apocalyptic number.

It is an amenable number.

1243013413 is a deficient number, since it is larger than the sum of its proper divisors (52424667).

1243013413 is an equidigital number, since it uses as much as digits as its factorization.

1243013413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3436.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 1243013413 is about 35256.3953489292. The cubic root of 1243013413 is about 1075.2066415090.

Adding to 1243013413 its reverse (3143103421), we get a palindrome (4386116834).

The spelling of 1243013413 in words is "one billion, two hundred forty-three million, thirteen thousand, four hundred thirteen".