113212515 has 16 divisors (see below), whose sum is σ = 195074208. Its totient is φ = 55735296.

The previous prime is 113212511. The next prime is 113212531. The reversal of 113212515 is 515212311.

It is not a de Polignac number, because 113212515 - 2² = 113212511 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 113212491 and 113212500.

It is not an unprimeable number, because it can be changed into a prime (113212511) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 290094 + ... + 290483.

It is an arithmetic number, because the mean of its divisors is an integer number (12192138).

Almost surely, 2^113212515 is an apocalyptic number.

113212515 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

113212515 is a deficient number, since it is larger than the sum of its proper divisors (81861693).

113212515 is a wasteful number, since it uses less digits than its factorization.

113212515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 580598.

The product of its digits is 300, while the sum is 21.

The square root of 113212515 is about 10640.1369822009. The cubic root of 113212515 is about 483.7616973982.

Adding to 113212515 its reverse (515212311), we get a palindrome (628424826).

The spelling of 113212515 in words is "one hundred thirteen million, two hundred twelve thousand, five hundred fifteen".