312234133 has 4 divisors (see below), whose sum is σ = 312691968. Its totient is φ = 311776300.

The previous prime is 312234103. The next prime is 312234217. The reversal of 312234133 is 331432213.

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 312234133 - 2²⁵ = 278679701 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 (312234103) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 227893 + ... + 229258.

It is an arithmetic number, because the mean of its divisors is an integer number (78172992).

Almost surely, 2^312234133 is an apocalyptic number.

It is an amenable number.

312234133 is a deficient number, since it is larger than the sum of its proper divisors (457835).

312234133 is an equidigital number, since it uses as much as digits as its factorization.

312234133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 457834.

The product of its digits is 1296, while the sum is 22.

The square root of 312234133 is about 17670.1480752143. The cubic root of 312234133 is about 678.4119031285.

Adding to 312234133 its reverse (331432213), we get a palindrome (643666346).

The spelling of 312234133 in words is "three hundred twelve million, two hundred thirty-four thousand, one hundred thirty-three".