113115251 has 4 divisors (see below), whose sum is σ = 113136600. Its totient is φ = 113093904.

The previous prime is 113115221. The next prime is 113115257. The reversal of 113115251 is 152511311.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 152511311 = 10831 ⋅14081.

It is a cyclic number.

It is not a de Polignac number, because 113115251 - 2¹⁰ = 113114227 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (113115257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3980 + ... + 15558.

It is an arithmetic number, because the mean of its divisors is an integer number (28284150).

Almost surely, 2^113115251 is an apocalyptic number.

113115251 is a deficient number, since it is larger than the sum of its proper divisors (21349).

113115251 is an equidigital number, since it uses as much as digits as its factorization.

113115251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21348.

The product of its digits is 150, while the sum is 20.

The square root of 113115251 is about 10635.5653822446. The cubic root of 113115251 is about 483.6231200248.

Adding to 113115251 its reverse (152511311), we get a palindrome (265626562).

The spelling of 113115251 in words is "one hundred thirteen million, one hundred fifteen thousand, two hundred fifty-one".