115211973 has 4 divisors (see below), whose sum is σ = 153615968. Its totient is φ = 76807980.

The previous prime is 115211963. The next prime is 115212017. The reversal of 115211973 is 379112511.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 379112511 = 3 ⋅126370837.

It is not a de Polignac number, because 115211973 - 2⁶ = 115211909 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 115211973.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115211923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19201993 + ... + 19201998.

It is an arithmetic number, because the mean of its divisors is an integer number (38403992).

Almost surely, 2^115211973 is an apocalyptic number.

It is an amenable number.

115211973 is a deficient number, since it is larger than the sum of its proper divisors (38403995).

115211973 is an equidigital number, since it uses as much as digits as its factorization.

115211973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38403994.

The product of its digits is 1890, while the sum is 30.

The square root of 115211973 is about 10733.6840367136. The cubic root of 115211973 is about 486.5930160537.

The spelling of 115211973 in words is "one hundred fifteen million, two hundred eleven thousand, nine hundred seventy-three".