820373315 has 16 divisors (see below), whose sum is σ = 1062676800. Its totient is φ = 606114432.

The previous prime is 820373311. The next prime is 820373339. The reversal of 820373315 is 513373028.

It is a cyclic number.

It is not a de Polignac number, because 820373315 - 2² = 820373311 is a prime.

It is not an unprimeable number, because it can be changed into a prime (820373311) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 119660 + ... + 126329.

It is an arithmetic number, because the mean of its divisors is an integer number (66417300).

Almost surely, 2^820373315 is an apocalyptic number.

820373315 is a deficient number, since it is larger than the sum of its proper divisors (242303485).

820373315 is a wasteful number, since it uses less digits than its factorization.

820373315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246046.

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 820373315 is about 28642.1597474771. The cubic root of 820373315 is about 936.1321810763.

It can be divided in two parts, 8203 and 73315, that added together give a palindrome (81518).

The spelling of 820373315 in words is "eight hundred twenty million, three hundred seventy-three thousand, three hundred fifteen".