115213205 has 24 divisors (see below), whose sum is σ = 146027520. Its totient is φ = 87160320.

The previous prime is 115213193. The next prime is 115213243. The reversal of 115213205 is 502312511.

It is a happy number.

It is not a de Polignac number, because 115213205 - 2⁸ = 115212949 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1187717 + ... + 1187813.

It is an arithmetic number, because the mean of its divisors is an integer number (6084480).

Almost surely, 2^115213205 is an apocalyptic number.

It is an amenable number.

115213205 is a deficient number, since it is larger than the sum of its proper divisors (30814315).

115213205 is an frugal number, since it uses more digits than its factorization.

115213205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 309 (or 212 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 115213205 is about 10733.7414259894. The cubic root of 115213205 is about 486.5947504812.

Adding to 115213205 its reverse (502312511), we get a palindrome (617525716).

The spelling of 115213205 in words is "one hundred fifteen million, two hundred thirteen thousand, two hundred five".