312311023 has 4 divisors (see below), whose sum is σ = 312634960. Its totient is φ = 311987088.

The previous prime is 312310993. The next prime is 312311039. The reversal of 312311023 is 320113213.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 312311023 - 2⁵ = 312310991 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 312310988 and 312311006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312311093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 160518 + ... + 162451.

It is an arithmetic number, because the mean of its divisors is an integer number (78158740).

Almost surely, 2^312311023 is an apocalyptic number.

312311023 is a deficient number, since it is larger than the sum of its proper divisors (323937).

312311023 is an equidigital number, since it uses as much as digits as its factorization.

312311023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 323936.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 312311023 is about 17672.3236446145. The cubic root of 312311023 is about 678.4675865665.

Adding to 312311023 its reverse (320113213), we get a palindrome (632424236).

The spelling of 312311023 in words is "three hundred twelve million, three hundred eleven thousand, twenty-three".