113951513 has 4 divisors (see below), whose sum is σ = 122717028. Its totient is φ = 105186000.

The previous prime is 113951501. The next prime is 113951549. The reversal of 113951513 is 315159311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 315159311 = 17 ⋅18538783.

It can be written as a sum of positive squares in 2 ways, for example, as 69689104 + 44262409 = 8348^2 + 6653^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-113951513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (113951413) 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, 4382738 + ... + 4382763.

It is an arithmetic number, because the mean of its divisors is an integer number (30679257).

Almost surely, 2^113951513 is an apocalyptic number.

113951513 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

113951513 is a deficient number, since it is larger than the sum of its proper divisors (8765515).

113951513 is an equidigital number, since it uses as much as digits as its factorization.

113951513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8765514.

The product of its digits is 2025, while the sum is 29.

The square root of 113951513 is about 10674.8073987309. The cubic root of 113951513 is about 484.8120049369.

The spelling of 113951513 in words is "one hundred thirteen million, nine hundred fifty-one thousand, five hundred thirteen".