1313243012 has 6 divisors (see below), whose sum is σ = 2298175278. Its totient is φ = 656621504.

The previous prime is 1313243003. The next prime is 1313243021. The reversal of 1313243012 is 2103423131.

It is an interprime number because it is at equal distance from previous prime (1313243003) and next prime (1313243021).

It can be written as a sum of positive squares in only one way, i.e., 1300612096 + 12630916 = 36064^2 + 3554^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 164155373 + ... + 164155380.

It is an arithmetic number, because the mean of its divisors is an integer number (383029213).

Almost surely, 2^1313243012 is an apocalyptic number.

It is an amenable number.

1313243012 is a deficient number, since it is larger than the sum of its proper divisors (984932266).

1313243012 is a wasteful number, since it uses less digits than its factorization.

1313243012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 328310757 (or 328310755 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 1313243012 is about 36238.6949544268. The cubic root of 1313243012 is about 1095.0863514118.

Adding to 1313243012 its reverse (2103423131), we get a palindrome (3416666143).

The spelling of 1313243012 in words is "one billion, three hundred thirteen million, two hundred forty-three thousand, twelve".