1323145515 has 16 divisors (see below), whose sum is σ = 2124265248. Its totient is φ = 703266816.

The previous prime is 1323145501. The next prime is 1323145529. The reversal of 1323145515 is 5155413231.

It is an interprime number because it is at equal distance from previous prime (1323145501) and next prime (1323145529).

It is not a de Polignac number, because 1323145515 - 2¹² = 1323141419 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 146134 + ... + 154923.

It is an arithmetic number, because the mean of its divisors is an integer number (132766578).

Almost surely, 2^1323145515 is an apocalyptic number.

1323145515 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1323145515 is a deficient number, since it is larger than the sum of its proper divisors (801119733).

1323145515 is a wasteful number, since it uses less digits than its factorization.

1323145515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 301358.

The product of its digits is 9000, while the sum is 30.

The square root of 1323145515 is about 36375.0672164327. The cubic root of 1323145515 is about 1097.8319597453.

Adding to 1323145515 its reverse (5155413231), we get a palindrome (6478558746).

The spelling of 1323145515 in words is "one billion, three hundred twenty-three million, one hundred forty-five thousand, five hundred fifteen".