312215233112 has 8 divisors (see below), whose sum is σ = 585403562100. Its totient is φ = 156107616552.

The previous prime is 312215233081. The next prime is 312215233117. The reversal of 312215233112 is 211332512213.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312215233117) 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 as a sum of consecutive naturals, namely, 19513452062 + ... + 19513452077.

Almost surely, 2^312215233112 is an apocalyptic number.

It is an amenable number.

312215233112 is a deficient number, since it is larger than the sum of its proper divisors (273188328988).

312215233112 is a wasteful number, since it uses less digits than its factorization.

312215233112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39026904145 (or 39026904141 counting only the distinct ones).

The product of its digits is 2160, while the sum is 26.

Adding to 312215233112 its reverse (211332512213), we get a palindrome (523547745325).

The spelling of 312215233112 in words is "three hundred twelve billion, two hundred fifteen million, two hundred thirty-three thousand, one hundred twelve".