1215040313 has 2 divisors, whose sum is σ = 1215040314. Its totient is φ = 1215040312.

The previous prime is 1215040241. The next prime is 1215040339. The reversal of 1215040313 is 3130405121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 793436224 + 421604089 = 28168^2 + 20533^2 .

It is a cyclic number.

It is not a de Polignac number, because 1215040313 - 2²⁴ = 1198263097 is a prime.

It is not a weakly prime, because it can be changed into another prime (1215048313) 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 as a sum of consecutive naturals, namely, 607520156 + 607520157.

It is an arithmetic number, because the mean of its divisors is an integer number (607520157).

Almost surely, 2^1215040313 is an apocalyptic number.

It is an amenable number.

1215040313 is a deficient number, since it is larger than the sum of its proper divisors (1).

1215040313 is an equidigital number, since it uses as much as digits as its factorization.

1215040313 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 1215040313 is about 34857.4283761726. The cubic root of 1215040313 is about 1067.0797927836.

Adding to 1215040313 its reverse (3130405121), we get a palindrome (4345445434).

The spelling of 1215040313 in words is "one billion, two hundred fifteen million, forty thousand, three hundred thirteen".