312321232031023 has 4 divisors (see below), whose sum is σ = 312321570429960. Its totient is φ = 312320893632088.

The previous prime is 312321232030987. The next prime is 312321232031059. The reversal of 312321232031023 is 320130232123213.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (312321232030987) and next prime (312321232031059).

It is a cyclic number.

It is not a de Polignac number, because 312321232031023 - 2³⁷ = 312183793077551 is a prime.

It is a super-2 number, since 2×312321232031023² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 312321232030982 and 312321232031000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312321232031093) 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, 167811265 + ... + 169662202.

It is an arithmetic number, because the mean of its divisors is an integer number (78080392607490).

Almost surely, 2^{312321232031023} is an apocalyptic number.

312321232031023 is a deficient number, since it is larger than the sum of its proper divisors (338398937).

312321232031023 is an equidigital number, since it uses as much as digits as its factorization.

312321232031023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 338398936.

The product of its (nonzero) digits is 7776, while the sum is 28.

Adding to 312321232031023 its reverse (320130232123213), we get a palindrome (632451464154236).

The spelling of 312321232031023 in words is "three hundred twelve trillion, three hundred twenty-one billion, two hundred thirty-two million, thirty-one thousand, twenty-three".