1306533316 has 81 divisors (see below), whose sum is σ = 2646794829. Its totient is φ = 563877600.

The previous prime is 1306533301. The next prime is 1306533329. The reversal of 1306533316 is 6133356031.

The square root of 1306533316 is 36146.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 941876100 + 364657216 = 30690^2 + 19096^2 .

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 24651546 + ... + 24651598.

Almost surely, 2^1306533316 is an apocalyptic number.

1306533316 is the 36146-th square number.

It is an amenable number.

1306533316 is an abundant number, since it is smaller than the sum of its proper divisors (1340261513).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1306533316 is a wasteful number, since it uses less digits than its factorization.

1306533316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194 (or 97 counting only the distinct ones).

The product of its (nonzero) digits is 14580, while the sum is 31.

The cubic root of 1306533316 is about 1093.2181402119.

Adding to 1306533316 its reverse (6133356031), we get a palindrome (7439889347).

The spelling of 1306533316 in words is "one billion, three hundred six million, five hundred thirty-three thousand, three hundred sixteen".