115220313 has 60 divisors (see below), whose sum is σ = 196629840. Its totient is φ = 67021344.

The previous prime is 115220311. The next prime is 115220341. The reversal of 115220313 is 313022511.

It is not a de Polignac number, because 115220313 - 2¹ = 115220311 is a prime.

It is not an unprimeable number, because it can be changed into a prime (115220311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 259870 + ... + 260312.

It is an arithmetic number, because the mean of its divisors is an integer number (3277164).

Almost surely, 2^115220313 is an apocalyptic number.

115220313 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

115220313 is a deficient number, since it is larger than the sum of its proper divisors (81409527).

115220313 is a wasteful number, since it uses less digits than its factorization.

115220313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 500 (or 478 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 115220313 is about 10734.0725263061. The cubic root of 115220313 is about 486.6047569857.

Adding to 115220313 its reverse (313022511), we get a palindrome (428242824).

The spelling of 115220313 in words is "one hundred fifteen million, two hundred twenty thousand, three hundred thirteen".