312121200300113 has 4 divisors (see below), whose sum is σ = 330481270906020. Its totient is φ = 293761129694208.

The previous prime is 312121200300109. The next prime is 312121200300131. The reversal of 312121200300113 is 311003002121213.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 252645207463489 + 59475992836624 = 15894817^2 + 7712068^2 .

It is a cyclic number.

It is not a de Polignac number, because 312121200300113 - 2² = 312121200300109 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (312121200300313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9180035302928 + ... + 9180035302961.

It is an arithmetic number, because the mean of its divisors is an integer number (82620317726505).

Almost surely, 2^{312121200300113} is an apocalyptic number.

It is an amenable number.

312121200300113 is a deficient number, since it is larger than the sum of its proper divisors (18360070605907).

312121200300113 is a wasteful number, since it uses less digits than its factorization.

312121200300113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18360070605906.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 312121200300113 its reverse (311003002121213), we get a palindrome (623124202421326).

The spelling of 312121200300113 in words is "three hundred twelve trillion, one hundred twenty-one billion, two hundred million, three hundred thousand, one hundred thirteen".