312133153 has 4 divisors (see below), whose sum is σ = 312680368. Its totient is φ = 311585940.

The previous prime is 312133139. The next prime is 312133169. The reversal of 312133153 is 351331213.

It is a happy number.

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 312133153 - 2⁹ = 312132641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (312134153) 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, 272751 + ... + 273892.

It is an arithmetic number, because the mean of its divisors is an integer number (78170092).

Almost surely, 2^312133153 is an apocalyptic number.

It is an amenable number.

312133153 is a deficient number, since it is larger than the sum of its proper divisors (547215).

312133153 is an equidigital number, since it uses as much as digits as its factorization.

312133153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 547214.

The product of its digits is 810, while the sum is 22.

The square root of 312133153 is about 17667.2904826971. The cubic root of 312133153 is about 678.3387599182.

Adding to 312133153 its reverse (351331213), we get a palindrome (663464366).

The spelling of 312133153 in words is "three hundred twelve million, one hundred thirty-three thousand, one hundred fifty-three".