312113233 has 4 divisors (see below), whose sum is σ = 312270448. Its totient is φ = 311956020.

The previous prime is 312113189. The next prime is 312113267. The reversal of 312113233 is 332311213.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 312113233 - 2⁹ = 312112721 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 312113233.

It is not an unprimeable number, because it can be changed into a prime (312113293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75591 + ... + 79612.

It is an arithmetic number, because the mean of its divisors is an integer number (78067612).

Almost surely, 2^312113233 is an apocalyptic number.

It is an amenable number.

312113233 is a deficient number, since it is larger than the sum of its proper divisors (157215).

312113233 is a wasteful number, since it uses less digits than its factorization.

312113233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157214.

The product of its digits is 324, while the sum is 19.

The square root of 312113233 is about 17666.7267200237. The cubic root of 312113233 is about 678.3243293294.

Adding to 312113233 its reverse (332311213), we get a palindrome (644424446).

The spelling of 312113233 in words is "three hundred twelve million, one hundred thirteen thousand, two hundred thirty-three".