312123110101 has 4 divisors (see below), whose sum is σ = 340497938304. Its totient is φ = 283748281900.

The previous prime is 312123110077. The next prime is 312123110111. The reversal of 312123110101 is 101011321213.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 312123110101 - 2³⁵ = 277763371733 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312123110111) 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, 14187414085 + ... + 14187414106.

It is an arithmetic number, because the mean of its divisors is an integer number (85124484576).

Almost surely, 2^312123110101 is an apocalyptic number.

It is an amenable number.

312123110101 is a deficient number, since it is larger than the sum of its proper divisors (28374828203).

312123110101 is a wasteful number, since it uses less digits than its factorization.

312123110101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28374828202.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 312123110101 its reverse (101011321213), we get a palindrome (413134431314).

It can be divided in two parts, 312123 and 110101, that added together give a palindrome (422224).

The spelling of 312123110101 in words is "three hundred twelve billion, one hundred twenty-three million, one hundred ten thousand, one hundred one".