1315211545 has 48 divisors (see below), whose sum is σ = 1748691648. Its totient is φ = 948648960.

The previous prime is 1315211543. The next prime is 1315211551. The reversal of 1315211545 is 5451125131.

It is not a de Polignac number, because 1315211545 - 2¹ = 1315211543 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1315211543) 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 47 ways as a sum of consecutive naturals, for example, 3790062 + ... + 3790408.

It is an arithmetic number, because the mean of its divisors is an integer number (36431076).

Almost surely, 2^1315211545 is an apocalyptic number.

It is an amenable number.

1315211545 is a deficient number, since it is larger than the sum of its proper divisors (433480103).

1315211545 is a wasteful number, since it uses less digits than its factorization.

1315211545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 490 (or 473 counting only the distinct ones).

The product of its digits is 3000, while the sum is 28.

The square root of 1315211545 is about 36265.8454334102. The cubic root of 1315211545 is about 1095.6332513048.

Adding to 1315211545 its reverse (5451125131), we get a palindrome (6766336676).

The spelling of 1315211545 in words is "one billion, three hundred fifteen million, two hundred eleven thousand, five hundred forty-five".