113415021 has 12 divisors (see below), whose sum is σ = 165445020. Its totient is φ = 74860800.

The previous prime is 113414989. The next prime is 113415023. The reversal of 113415021 is 120514311.

It can be written as a sum of positive squares in 2 ways, for example, as 94361796 + 19053225 = 9714^2 + 4365^2 .

It is not a de Polignac number, because 113415021 - 2⁵ = 113414989 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 113414985 and 113415003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113415023) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 61476 + ... + 63293.

It is an arithmetic number, because the mean of its divisors is an integer number (13787085).

Almost surely, 2^113415021 is an apocalyptic number.

It is an amenable number.

113415021 is a deficient number, since it is larger than the sum of its proper divisors (52029999).

113415021 is a wasteful number, since it uses less digits than its factorization.

113415021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124876 (or 124873 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 113415021 is about 10649.6488674510. The cubic root of 113415021 is about 484.0499643909.

Adding to 113415021 its reverse (120514311), we get a palindrome (233929332).

The spelling of 113415021 in words is "one hundred thirteen million, four hundred fifteen thousand, twenty-one".