312123401 has 8 divisors (see below), whose sum is σ = 315397344. Its totient is φ = 308864160.

The previous prime is 312123373. The next prime is 312123419. The reversal of 312123401 is 104321213.

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

It is a cyclic number.

It is not a de Polignac number, because 312123401 - 2⁶ = 312123337 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 312123401.

It is not an unprimeable number, because it can be changed into a prime (312123421) 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, 41906 + ... + 48788.

It is an arithmetic number, because the mean of its divisors is an integer number (39424668).

Almost surely, 2^312123401 is an apocalyptic number.

It is an amenable number.

312123401 is a deficient number, since it is larger than the sum of its proper divisors (3273943).

312123401 is a wasteful number, since it uses less digits than its factorization.

312123401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7351.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 312123401 is about 17667.0144902867. The cubic root of 312123401 is about 678.3316953814.

Adding to 312123401 its reverse (104321213), we get a palindrome (416444614).

The spelling of 312123401 in words is "three hundred twelve million, one hundred twenty-three thousand, four hundred one".