1211313115 has 8 divisors (see below), whose sum is σ = 1464672528. Its totient is φ = 961652640.

The previous prime is 1211313049. The next prime is 1211313149. The reversal of 1211313115 is 5113131121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1211313115 - 2¹⁵ = 1211280347 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1211313092 and 1211313101.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 924012 + ... + 925321.

It is an arithmetic number, because the mean of its divisors is an integer number (183084066).

Almost surely, 2^1211313115 is an apocalyptic number.

1211313115 is a deficient number, since it is larger than the sum of its proper divisors (253359413).

1211313115 is a wasteful number, since it uses less digits than its factorization.

1211313115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1849469.

The product of its digits is 90, while the sum is 19.

The square root of 1211313115 is about 34803.9238448770. The cubic root of 1211313115 is about 1065.9875680115.

Adding to 1211313115 its reverse (5113131121), we get a palindrome (6324444236).

The spelling of 1211313115 in words is "one billion, two hundred eleven million, three hundred thirteen thousand, one hundred fifteen".