113145251 has 4 divisors (see below), whose sum is σ = 119800872. Its totient is φ = 106489632.

The previous prime is 113145239. The next prime is 113145283. The reversal of 113145251 is 152541311.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 113145251 - 2⁶ = 113145187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (113165251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3327785 + ... + 3327818.

It is an arithmetic number, because the mean of its divisors is an integer number (29950218).

Almost surely, 2^113145251 is an apocalyptic number.

113145251 is a deficient number, since it is larger than the sum of its proper divisors (6655621).

113145251 is an equidigital number, since it uses as much as digits as its factorization.

113145251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6655620.

The product of its digits is 600, while the sum is 23.

The square root of 113145251 is about 10636.9756510016. The cubic root of 113145251 is about 483.6658711452.

Adding to 113145251 its reverse (152541311), we get a palindrome (265686562).

The spelling of 113145251 in words is "one hundred thirteen million, one hundred forty-five thousand, two hundred fifty-one".