312321235153 has 4 divisors (see below), whose sum is σ = 312339731508. Its totient is φ = 312302738800.

The previous prime is 312321235099. The next prime is 312321235159. The reversal of 312321235153 is 351532123213.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 351532123213 = 17 ⋅20678360189.

It can be written as a sum of positive squares in 2 ways, for example, as 297409894609 + 14911340544 = 545353^2 + 122112^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-312321235153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (312321235159) 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, 9222826 + ... + 9256627.

It is an arithmetic number, because the mean of its divisors is an integer number (78084932877).

Almost surely, 2^312321235153 is an apocalyptic number.

It is an amenable number.

312321235153 is a deficient number, since it is larger than the sum of its proper divisors (18496355).

312321235153 is a wasteful number, since it uses less digits than its factorization.

312321235153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18496354.

The product of its digits is 16200, while the sum is 31.

Adding to 312321235153 its reverse (351532123213), we get a palindrome (663853358366).

The spelling of 312321235153 in words is "three hundred twelve billion, three hundred twenty-one million, two hundred thirty-five thousand, one hundred fifty-three".