312133213004231 has 4 divisors (see below), whose sum is σ = 330493990239792. Its totient is φ = 293772435768672.

The previous prime is 312133213004203. The next prime is 312133213004243. The reversal of 312133213004231 is 132400312331213.

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

It is a cyclic number.

It is not a de Polignac number, because 312133213004231 - 2¹⁴ = 312133212987847 is a prime.

It is a super-2 number, since 2×312133213004231² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 312133213004194 and 312133213004203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312133213004201) 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, 9180388617755 + ... + 9180388617788.

It is an arithmetic number, because the mean of its divisors is an integer number (82623497559948).

Almost surely, 2^{312133213004231} is an apocalyptic number.

312133213004231 is a deficient number, since it is larger than the sum of its proper divisors (18360777235561).

312133213004231 is a wasteful number, since it uses less digits than its factorization.

312133213004231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18360777235560.

The product of its (nonzero) digits is 7776, while the sum is 29.

Adding to 312133213004231 its reverse (132400312331213), we get a palindrome (444533525335444).

The spelling of 312133213004231 in words is "three hundred twelve trillion, one hundred thirty-three billion, two hundred thirteen million, four thousand, two hundred thirty-one".