312161353 has 4 divisors (see below), whose sum is σ = 356755840. Its totient is φ = 267566868.

The previous prime is 312161347. The next prime is 312161371. The reversal of 312161353 is 353161213.

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 312161353 - 2¹³ = 312153161 is a prime.

It is not an unprimeable number, because it can be changed into a prime (312161053) 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, 22297233 + ... + 22297246.

It is an arithmetic number, because the mean of its divisors is an integer number (89188960).

Almost surely, 2^312161353 is an apocalyptic number.

It is an amenable number.

312161353 is a deficient number, since it is larger than the sum of its proper divisors (44594487).

312161353 is an equidigital number, since it uses as much as digits as its factorization.

312161353 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44594486.

The product of its digits is 1620, while the sum is 25.

The square root of 312161353 is about 17668.0885496989. The cubic root of 312161353 is about 678.3591877141.

The spelling of 312161353 in words is "three hundred twelve million, one hundred sixty-one thousand, three hundred fifty-three".