115212319 has 4 divisors (see below), whose sum is σ = 115350480. Its totient is φ = 115074160.

The previous prime is 115212299. The next prime is 115212341. The reversal of 115212319 is 913212511.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 115212319 - 2⁵ = 115212287 is a prime.

It is a super-2 number, since 2×115212319² = 26547756898715522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 115212293 and 115212302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115212379) 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 3 ways as a sum of consecutive naturals, for example, 67822 + ... + 69499.

It is an arithmetic number, because the mean of its divisors is an integer number (28837620).

Almost surely, 2^115212319 is an apocalyptic number.

115212319 is a deficient number, since it is larger than the sum of its proper divisors (138161).

115212319 is an equidigital number, since it uses as much as digits as its factorization.

115212319 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138160.

The product of its digits is 540, while the sum is 25.

The square root of 115212319 is about 10733.7001541873. The cubic root of 115212319 is about 486.5935031588.

The spelling of 115212319 in words is "one hundred fifteen million, two hundred twelve thousand, three hundred nineteen".