1313041345 has 64 divisors (see below), whose sum is σ = 2017405440. Its totient is φ = 796723200.

The previous prime is 1313041343. The next prime is 1313041357. The reversal of 1313041345 is 5431403131.

It is not a de Polignac number, because 1313041345 - 2¹ = 1313041343 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1313041343) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4672605 + ... + 4672885.

It is an arithmetic number, because the mean of its divisors is an integer number (31521960).

Almost surely, 2^1313041345 is an apocalyptic number.

It is an amenable number.

1313041345 is a deficient number, since it is larger than the sum of its proper divisors (704364095).

1313041345 is a wasteful number, since it uses less digits than its factorization.

1313041345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 586.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 1313041345 is about 36235.9123660492. The cubic root of 1313041345 is about 1095.0302932203.

Adding to 1313041345 its reverse (5431403131), we get a palindrome (6744444476).

The spelling of 1313041345 in words is "one billion, three hundred thirteen million, forty-one thousand, three hundred forty-five".