312105023 has 8 divisors (see below), whose sum is σ = 330866928. Its totient is φ = 293387904.

The previous prime is 312105019. The next prime is 312105029. The reversal of 312105023 is 320501213.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 312105023 - 2² = 312105019 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 312104992 and 312105010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312105029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3740 + ... + 25262.

It is an arithmetic number, because the mean of its divisors is an integer number (41358366).

Almost surely, 2^312105023 is an apocalyptic number.

312105023 is a deficient number, since it is larger than the sum of its proper divisors (18761905).

312105023 is a wasteful number, since it uses less digits than its factorization.

312105023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22393.

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 312105023 is about 17666.4943607950. The cubic root of 312105023 is about 678.3183816039.

Adding to 312105023 its reverse (320501213), we get a palindrome (632606236).

The spelling of 312105023 in words is "three hundred twelve million, one hundred five thousand, twenty-three".