312121423313 has 16 divisors (see below), whose sum is σ = 358162459776. Its totient is φ = 266445607680.

The previous prime is 312121423307. The next prime is 312121423333. The reversal of 312121423313 is 313324121213.

It is a happy number.

It is not a de Polignac number, because 312121423313 - 2¹⁴ = 312121406929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (312121423333) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1658270 + ... + 1836872.

It is an arithmetic number, because the mean of its divisors is an integer number (22385153736).

Almost surely, 2^312121423313 is an apocalyptic number.

It is an amenable number.

312121423313 is a deficient number, since it is larger than the sum of its proper divisors (46041036463).

312121423313 is a wasteful number, since it uses less digits than its factorization.

312121423313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179624.

The product of its digits is 2592, while the sum is 26.

Adding to 312121423313 its reverse (313324121213), we get a palindrome (625445544526).

The spelling of 312121423313 in words is "three hundred twelve billion, one hundred twenty-one million, four hundred twenty-three thousand, three hundred thirteen".