312212133203 has 4 divisors (see below), whose sum is σ = 328644350760. Its totient is φ = 295779915648.

The previous prime is 312212133199. The next prime is 312212133229. The reversal of 312212133203 is 302331212213.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 302331212213 = 1291 ⋅234183743.

It is a cyclic number.

It is not a de Polignac number, because 312212133203 - 2² = 312212133199 is a prime.

It is a super-2 number, since 2×312212133203² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (312212133293) 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 in 3 ways as a sum of consecutive naturals, for example, 8216108750 + ... + 8216108787.

It is an arithmetic number, because the mean of its divisors is an integer number (82161087690).

Almost surely, 2^312212133203 is an apocalyptic number.

312212133203 is a deficient number, since it is larger than the sum of its proper divisors (16432217557).

312212133203 is a wasteful number, since it uses less digits than its factorization.

312212133203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16432217556.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 312212133203 its reverse (302331212213), we get a palindrome (614543345416).

The spelling of 312212133203 in words is "three hundred twelve billion, two hundred twelve million, one hundred thirty-three thousand, two hundred three".