312215512213 has 32 divisors (see below), whose sum is σ = 355727925504. Its totient is φ = 271502400000.

The previous prime is 312215512157. The next prime is 312215512223.

312215512213 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 312215512213 - 2¹³ = 312215504021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312215512223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 45436168 + ... + 45443038.

It is an arithmetic number, because the mean of its divisors is an integer number (11116497672).

Almost surely, 2^312215512213 is an apocalyptic number.

It is an amenable number.

312215512213 is a deficient number, since it is larger than the sum of its proper divisors (43512413291).

312215512213 is a wasteful number, since it uses less digits than its factorization.

312215512213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8877.

The product of its digits is 3600, while the sum is 28.

It can be divided in two parts, 312215 and 512213, that added together give a palindrome (824428).

The spelling of 312215512213 in words is "three hundred twelve billion, two hundred fifteen million, five hundred twelve thousand, two hundred thirteen".